ActivityPub Viewer

A small tool to view real-world ActivityPub objects as JSON! Enter a URL or username from Mastodon or a similar service below, and we'll send a request with the right Accept header to the server to view the underlying object.

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{ "@context": [ "https://www.w3.org/ns/activitystreams", { "ostatus": "http://ostatus.org#", "atomUri": "ostatus:atomUri", "inReplyToAtomUri": "ostatus:inReplyToAtomUri", "conversation": "ostatus:conversation", "sensitive": "as:sensitive", "toot": "http://joinmastodon.org/ns#", "votersCount": "toot:votersCount" } ], "id": "https://mathstodon.xyz/users/siddharth64/outbox?min_id=0&page=true", "type": "OrderedCollectionPage", "next": "https://mathstodon.xyz/users/siddharth64/outbox?max_id=109340061009279318&page=true", "prev": "https://mathstodon.xyz/users/siddharth64/outbox?min_id=110756288141040852&page=true", "partOf": "https://mathstodon.xyz/users/siddharth64/outbox", "orderedItems": [ { "id": "https://mathstodon.xyz/users/siddharth64/statuses/110756288141040852/activity", "type": "Create", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2023-07-22T06:20:38Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/siddharth64/followers", "https://mastodonapp.uk/users/gmmds" ], "object": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/110756288141040852", "type": "Note", "summary": null, "inReplyTo": "https://mastodonapp.uk/users/gmmds/statuses/110756268914855376", "published": "2023-07-22T06:20:38Z", "url": "https://mathstodon.xyz/@siddharth64/110756288141040852", "attributedTo": "https://mathstodon.xyz/users/siddharth64", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/siddharth64/followers", "https://mastodonapp.uk/users/gmmds" ], "sensitive": false, "atomUri": "https://mathstodon.xyz/users/siddharth64/statuses/110756288141040852", "inReplyToAtomUri": "https://mastodonapp.uk/users/gmmds/statuses/110756268914855376", "conversation": "tag:mastodonapp.uk,2023-07-22:objectId=67495628:objectType=Conversation", "content": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mastodonapp.uk/@gmmds\" class=\"u-url mention\">@<span>gmmds</span></a></span> that is wild</p>", "contentMap": { "en": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mastodonapp.uk/@gmmds\" class=\"u-url mention\">@<span>gmmds</span></a></span> that is wild</p>" }, "attachment": [], "tag": [ { "type": "Mention", "href": "https://mastodonapp.uk/users/gmmds", "name": "@gmmds@mastodonapp.uk" } ], "replies": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/110756288141040852/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mathstodon.xyz/users/siddharth64/statuses/110756288141040852/replies?only_other_accounts=true&page=true", "partOf": "https://mathstodon.xyz/users/siddharth64/statuses/110756288141040852/replies", "items": [] } }, "likes": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/110756288141040852/likes", "type": "Collection", "totalItems": 1 }, "shares": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/110756288141040852/shares", "type": "Collection", "totalItems": 0 } } }, { "id": "https://mathstodon.xyz/users/siddharth64/statuses/110613368490033929/activity", "type": "Announce", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2023-06-27T00:34:17Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/dpiponi", "https://mathstodon.xyz/users/siddharth64/followers" ], "object": "https://mathstodon.xyz/users/dpiponi/statuses/110611487355334979" }, { "id": "https://mathstodon.xyz/users/siddharth64/statuses/110579460608302856/activity", "type": "Create", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2023-06-21T00:51:04Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/siddharth64/followers", "https://mathstodon.xyz/users/nilesjohnson" ], "object": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/110579460608302856", "type": "Note", "summary": null, "inReplyTo": "https://mathstodon.xyz/users/nilesjohnson/statuses/110577198806303420", "published": "2023-06-21T00:51:04Z", "url": "https://mathstodon.xyz/@siddharth64/110579460608302856", "attributedTo": "https://mathstodon.xyz/users/siddharth64", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/siddharth64/followers", "https://mathstodon.xyz/users/nilesjohnson" ], "sensitive": false, "atomUri": "https://mathstodon.xyz/users/siddharth64/statuses/110579460608302856", "inReplyToAtomUri": "https://mathstodon.xyz/users/nilesjohnson/statuses/110577198806303420", "conversation": "tag:mathstodon.xyz,2023-06-20:objectId=54521225:objectType=Conversation", "content": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mathstodon.xyz/@nilesjohnson\" class=\"u-url mention\">@<span>nilesjohnson</span></a></span> I saw that a few math people on Twitter got an email. One weird instance involved NewsMast using the incorrect name in the greeting. It&#39;s hard to decipher their legitimacy.</p>", "contentMap": { "en": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mathstodon.xyz/@nilesjohnson\" class=\"u-url mention\">@<span>nilesjohnson</span></a></span> I saw that a few math people on Twitter got an email. One weird instance involved NewsMast using the incorrect name in the greeting. It&#39;s hard to decipher their legitimacy.</p>" }, "attachment": [], "tag": [ { "type": "Mention", "href": "https://mathstodon.xyz/users/nilesjohnson", "name": "@nilesjohnson" } ], "replies": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/110579460608302856/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mathstodon.xyz/users/siddharth64/statuses/110579460608302856/replies?only_other_accounts=true&page=true", "partOf": "https://mathstodon.xyz/users/siddharth64/statuses/110579460608302856/replies", "items": [] } }, "likes": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/110579460608302856/likes", "type": "Collection", "totalItems": 1 }, "shares": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/110579460608302856/shares", "type": "Collection", "totalItems": 0 } } }, { "id": "https://mathstodon.xyz/users/siddharth64/statuses/110348035378679324/activity", "type": "Announce", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2023-05-11T03:56:35Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodonapp.uk/users/gmmds", "https://mathstodon.xyz/users/siddharth64/followers" ], "object": "https://mastodonapp.uk/users/gmmds/statuses/110345697477295303" }, { "id": "https://mathstodon.xyz/users/siddharth64/statuses/110192996470635735/activity", "type": "Announce", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2023-04-13T18:48:09Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.online/users/lichess", "https://mathstodon.xyz/users/siddharth64/followers" ], "object": "https://mastodon.online/users/lichess/statuses/110191846405079557" }, { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109843582163187796/activity", "type": "Create", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2023-02-11T01:47:30Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/siddharth64/followers", "https://mstdn.social/users/alanleo" ], "object": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109843582163187796", "type": "Note", "summary": null, "inReplyTo": "https://mstdn.social/users/alanleo/statuses/109843331472784410", "published": "2023-02-11T01:47:30Z", "url": "https://mathstodon.xyz/@siddharth64/109843582163187796", "attributedTo": "https://mathstodon.xyz/users/siddharth64", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/siddharth64/followers", "https://mstdn.social/users/alanleo" ], "sensitive": false, "atomUri": "https://mathstodon.xyz/users/siddharth64/statuses/109843582163187796", "inReplyToAtomUri": "https://mstdn.social/users/alanleo/statuses/109843331472784410", "conversation": "tag:mstdn.social,2023-02-11:objectId=160294322:objectType=Conversation", "content": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mstdn.social/@alanleo\" class=\"u-url mention\">@<span>alanleo</span></a></span> As Stockfish, points out, Qc7 was a mistake as white could reply with Rxg6!, getting a free pawn.</p>", "contentMap": { "en": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mstdn.social/@alanleo\" class=\"u-url mention\">@<span>alanleo</span></a></span> As Stockfish, points out, Qc7 was a mistake as white could reply with Rxg6!, getting a free pawn.</p>" }, "attachment": [], "tag": [ { "type": "Mention", "href": "https://mstdn.social/users/alanleo", "name": "@alanleo@mstdn.social" } ], "replies": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109843582163187796/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mathstodon.xyz/users/siddharth64/statuses/109843582163187796/replies?only_other_accounts=true&page=true", "partOf": "https://mathstodon.xyz/users/siddharth64/statuses/109843582163187796/replies", "items": [] } }, "likes": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109843582163187796/likes", "type": "Collection", "totalItems": 1 }, "shares": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109843582163187796/shares", "type": "Collection", "totalItems": 0 } } }, { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109770878462880757/activity", "type": "Announce", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2023-01-29T05:37:59Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.social/users/nicktmro", "https://mathstodon.xyz/users/siddharth64/followers" ], "object": "https://mastodon.social/users/nicktmro/statuses/109768840165190180" }, { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109769186097399061/activity", "type": "Create", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2023-01-28T22:27:36Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/siddharth64/followers", "https://mathstodon.xyz/users/timhenke" ], "object": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109769186097399061", "type": "Note", "summary": null, "inReplyTo": "https://mathstodon.xyz/users/timhenke/statuses/109767137160287724", "published": "2023-01-28T22:27:36Z", "url": "https://mathstodon.xyz/@siddharth64/109769186097399061", "attributedTo": "https://mathstodon.xyz/users/siddharth64", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/siddharth64/followers", "https://mathstodon.xyz/users/timhenke" ], "sensitive": false, "atomUri": "https://mathstodon.xyz/users/siddharth64/statuses/109769186097399061", "inReplyToAtomUri": "https://mathstodon.xyz/users/timhenke/statuses/109767137160287724", "conversation": "tag:mathstodon.xyz,2023-01-28:objectId=39263357:objectType=Conversation", "content": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mathstodon.xyz/@timhenke\" class=\"u-url mention\">@<span>timhenke</span></a></span> I had the same thought earlier this week!</p>", "contentMap": { "nl": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mathstodon.xyz/@timhenke\" class=\"u-url mention\">@<span>timhenke</span></a></span> I had the same thought earlier this week!</p>" }, "attachment": [], "tag": [ { "type": "Mention", "href": "https://mathstodon.xyz/users/timhenke", "name": "@timhenke" } ], "replies": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109769186097399061/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mathstodon.xyz/users/siddharth64/statuses/109769186097399061/replies?only_other_accounts=true&page=true", "partOf": "https://mathstodon.xyz/users/siddharth64/statuses/109769186097399061/replies", "items": [] } }, "likes": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109769186097399061/likes", "type": "Collection", "totalItems": 1 }, "shares": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109769186097399061/shares", "type": "Collection", "totalItems": 0 } } }, { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109683434635973588/activity", "type": "Create", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2023-01-13T18:59:52Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/siddharth64/followers", "https://mathstodon.xyz/users/jbeardsleymath" ], "object": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109683434635973588", "type": "Note", "summary": null, "inReplyTo": "https://mathstodon.xyz/users/jbeardsleymath/statuses/109683152732808360", "published": "2023-01-13T18:59:52Z", "url": "https://mathstodon.xyz/@siddharth64/109683434635973588", "attributedTo": "https://mathstodon.xyz/users/siddharth64", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/siddharth64/followers", "https://mathstodon.xyz/users/jbeardsleymath" ], "sensitive": false, "atomUri": "https://mathstodon.xyz/users/siddharth64/statuses/109683434635973588", "inReplyToAtomUri": "https://mathstodon.xyz/users/jbeardsleymath/statuses/109683152732808360", "conversation": "tag:mathstodon.xyz,2023-01-13:objectId=37483197:objectType=Conversation", "content": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mathstodon.xyz/@jbeardsleymath\" class=\"u-url mention\">@<span>jbeardsleymath</span></a></span> I just read the latter few chapters on Spectral Sequences, but I loved it!</p>", "contentMap": { "en": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mathstodon.xyz/@jbeardsleymath\" class=\"u-url mention\">@<span>jbeardsleymath</span></a></span> I just read the latter few chapters on Spectral Sequences, but I loved it!</p>" }, "attachment": [], "tag": [ { "type": "Mention", "href": "https://mathstodon.xyz/users/jbeardsleymath", "name": "@jbeardsleymath" } ], "replies": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109683434635973588/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mathstodon.xyz/users/siddharth64/statuses/109683434635973588/replies?only_other_accounts=true&page=true", "partOf": "https://mathstodon.xyz/users/siddharth64/statuses/109683434635973588/replies", "items": [] } }, "likes": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109683434635973588/likes", "type": "Collection", "totalItems": 1 }, "shares": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109683434635973588/shares", "type": "Collection", "totalItems": 0 } } }, { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109526533761649846/activity", "type": "Announce", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2022-12-17T01:57:55Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/MotivicKyle", "https://mathstodon.xyz/users/siddharth64/followers" ], "object": "https://mathstodon.xyz/users/MotivicKyle/statuses/109526082370179604" }, { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109521194304793765/activity", "type": "Create", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2022-12-16T03:20:01Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/siddharth64/followers", "https://mathstodon.xyz/users/pvk" ], "object": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109521194304793765", "type": "Note", "summary": null, "inReplyTo": "https://mathstodon.xyz/users/pvk/statuses/109518887264325100", "published": "2022-12-16T03:20:01Z", "url": "https://mathstodon.xyz/@siddharth64/109521194304793765", "attributedTo": "https://mathstodon.xyz/users/siddharth64", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/siddharth64/followers", "https://mathstodon.xyz/users/pvk" ], "sensitive": false, "atomUri": "https://mathstodon.xyz/users/siddharth64/statuses/109521194304793765", "inReplyToAtomUri": "https://mathstodon.xyz/users/pvk/statuses/109518887264325100", "conversation": "tag:mathstodon.xyz,2022-12-15:objectId=33492859:objectType=Conversation", "content": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mathstodon.xyz/@pvk\" class=\"u-url mention\">@<span>pvk</span></a></span> It&#39;s absolutely wild. The symm monoidal structure on Sp just emerges out of nowhere!</p>", "contentMap": { "en": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mathstodon.xyz/@pvk\" class=\"u-url mention\">@<span>pvk</span></a></span> It&#39;s absolutely wild. The symm monoidal structure on Sp just emerges out of nowhere!</p>" }, "attachment": [], "tag": [ { "type": "Mention", "href": "https://mathstodon.xyz/users/pvk", "name": "@pvk" } ], "replies": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109521194304793765/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mathstodon.xyz/users/siddharth64/statuses/109521194304793765/replies?only_other_accounts=true&page=true", "partOf": "https://mathstodon.xyz/users/siddharth64/statuses/109521194304793765/replies", "items": [] } }, "likes": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109521194304793765/likes", "type": "Collection", "totalItems": 0 }, "shares": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109521194304793765/shares", "type": "Collection", "totalItems": 0 } } }, { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109513394041021255/activity", "type": "Create", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2022-12-14T18:16:19Z", "to": [ "https://mathstodon.xyz/users/siddharth64/followers" ], "cc": [ "https://www.w3.org/ns/activitystreams#Public", "https://mathstodon.xyz/users/nilesjohnson" ], "object": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109513394041021255", "type": "Note", "summary": null, "inReplyTo": "https://mathstodon.xyz/users/nilesjohnson/statuses/109484415056623106", "published": "2022-12-14T18:16:19Z", "url": "https://mathstodon.xyz/@siddharth64/109513394041021255", "attributedTo": "https://mathstodon.xyz/users/siddharth64", "to": [ "https://mathstodon.xyz/users/siddharth64/followers" ], "cc": [ "https://www.w3.org/ns/activitystreams#Public", "https://mathstodon.xyz/users/nilesjohnson" ], "sensitive": false, "atomUri": "https://mathstodon.xyz/users/siddharth64/statuses/109513394041021255", "inReplyToAtomUri": "https://mathstodon.xyz/users/nilesjohnson/statuses/109484415056623106", "conversation": "tag:mathstodon.xyz,2022-12-09:objectId=32733282:objectType=Conversation", "content": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mathstodon.xyz/@nilesjohnson\" class=\"u-url mention\">@<span>nilesjohnson</span></a></span> Are there any particular sections I should look at if I&#39;m primarily interested in G-spectra?</p>", "contentMap": { "en": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mathstodon.xyz/@nilesjohnson\" class=\"u-url mention\">@<span>nilesjohnson</span></a></span> Are there any particular sections I should look at if I&#39;m primarily interested in G-spectra?</p>" }, "attachment": [], "tag": [ { "type": "Mention", "href": "https://mathstodon.xyz/users/nilesjohnson", "name": "@nilesjohnson" } ], "replies": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109513394041021255/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mathstodon.xyz/users/siddharth64/statuses/109513394041021255/replies?only_other_accounts=true&page=true", "partOf": "https://mathstodon.xyz/users/siddharth64/statuses/109513394041021255/replies", "items": [] } }, "likes": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109513394041021255/likes", "type": "Collection", "totalItems": 1 }, "shares": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109513394041021255/shares", "type": "Collection", "totalItems": 0 } } }, { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109473834965914470/activity", "type": "Create", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2022-12-07T18:35:55Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/siddharth64/followers", "https://mathstodon.xyz/users/JordiGH" ], "object": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109473834965914470", "type": "Note", "summary": null, "inReplyTo": "https://mathstodon.xyz/users/JordiGH/statuses/109473789797959796", "published": "2022-12-07T18:35:55Z", "url": "https://mathstodon.xyz/@siddharth64/109473834965914470", "attributedTo": "https://mathstodon.xyz/users/siddharth64", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/siddharth64/followers", "https://mathstodon.xyz/users/JordiGH" ], "sensitive": false, "atomUri": "https://mathstodon.xyz/users/siddharth64/statuses/109473834965914470", "inReplyToAtomUri": "https://mathstodon.xyz/users/JordiGH/statuses/109473789797959796", "conversation": "tag:mathstodon.xyz,2022-12-07:objectId=32503041:objectType=Conversation", "content": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mathstodon.xyz/@JordiGH\" class=\"u-url mention\">@<span>JordiGH</span></a></span> Zip works as well, though finding SmartZip was harder than the others</p>", "contentMap": { "en": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mathstodon.xyz/@JordiGH\" class=\"u-url mention\">@<span>JordiGH</span></a></span> Zip works as well, though finding SmartZip was harder than the others</p>" }, "attachment": [], "tag": [ { "type": "Mention", "href": "https://mathstodon.xyz/users/JordiGH", "name": "@JordiGH" } ], "replies": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109473834965914470/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mathstodon.xyz/users/siddharth64/statuses/109473834965914470/replies?only_other_accounts=true&page=true", "partOf": "https://mathstodon.xyz/users/siddharth64/statuses/109473834965914470/replies", "items": [] } }, "likes": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109473834965914470/likes", "type": "Collection", "totalItems": 3 }, "shares": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109473834965914470/shares", "type": "Collection", "totalItems": 1 } } }, { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109450720222937081/activity", "type": "Announce", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2022-12-03T16:37:32Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://types.pl/users/agdakx", "https://mathstodon.xyz/users/siddharth64/followers" ], "object": "https://types.pl/users/agdakx/statuses/109449402299009141" }, { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109430638247549769/activity", "type": "Create", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2022-11-30T03:30:25Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/siddharth64/followers", "https://mathstodon.xyz/users/gramix" ], "object": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109430638247549769", "type": "Note", "summary": null, "inReplyTo": "https://mathstodon.xyz/users/gramix/statuses/109427775417476403", "published": "2022-11-30T03:30:25Z", "url": "https://mathstodon.xyz/@siddharth64/109430638247549769", "attributedTo": "https://mathstodon.xyz/users/siddharth64", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/siddharth64/followers", "https://mathstodon.xyz/users/gramix" ], "sensitive": false, "atomUri": "https://mathstodon.xyz/users/siddharth64/statuses/109430638247549769", "inReplyToAtomUri": "https://mathstodon.xyz/users/gramix/statuses/109427775417476403", "conversation": "tag:mathstodon.xyz,2022-11-29:objectId=31431029:objectType=Conversation", "content": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mathstodon.xyz/@gramix\" class=\"u-url mention\">@<span>gramix</span></a></span> I&#39;ve found Whitehead&#39;s problem to be pretty wild. It asks: If \\[Ext^1(A, \\mathbb{Z})=0\\] then is A a free ab group?</p><p>Turns out that this is independent of ZFC!</p>", "contentMap": { "en": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mathstodon.xyz/@gramix\" class=\"u-url mention\">@<span>gramix</span></a></span> I&#39;ve found Whitehead&#39;s problem to be pretty wild. It asks: If \\[Ext^1(A, \\mathbb{Z})=0\\] then is A a free ab group?</p><p>Turns out that this is independent of ZFC!</p>" }, "attachment": [], "tag": [ { "type": "Mention", "href": "https://mathstodon.xyz/users/gramix", "name": "@gramix" } ], "replies": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109430638247549769/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mathstodon.xyz/users/siddharth64/statuses/109430638247549769/replies?only_other_accounts=true&page=true", "partOf": "https://mathstodon.xyz/users/siddharth64/statuses/109430638247549769/replies", "items": [] } }, "likes": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109430638247549769/likes", "type": "Collection", "totalItems": 1 }, "shares": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109430638247549769/shares", "type": "Collection", "totalItems": 0 } } }, { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109427839533468027/activity", "type": "Create", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2022-11-29T15:38:41Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/siddharth64/followers", "https://mathstodon.xyz/users/cappallo" ], "object": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109427839533468027", "type": "Note", "summary": null, "inReplyTo": "https://mathstodon.xyz/users/cappallo/statuses/109427814887023788", "published": "2022-11-29T15:38:41Z", "url": "https://mathstodon.xyz/@siddharth64/109427839533468027", "attributedTo": "https://mathstodon.xyz/users/siddharth64", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/siddharth64/followers", "https://mathstodon.xyz/users/cappallo" ], "sensitive": false, "atomUri": "https://mathstodon.xyz/users/siddharth64/statuses/109427839533468027", "inReplyToAtomUri": "https://mathstodon.xyz/users/cappallo/statuses/109427814887023788", "conversation": "tag:mathstodon.xyz,2022-11-29:objectId=31431029:objectType=Conversation", "content": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mathstodon.xyz/@cappallo\" class=\"u-url mention\">@<span>cappallo</span></a></span> I really like Aluffi&#39;s &quot;Algebra: Chapter 0&quot;. More category theoretic than other options, which might appeal to the CS side a bit as well.</p>", "contentMap": { "en": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mathstodon.xyz/@cappallo\" class=\"u-url mention\">@<span>cappallo</span></a></span> I really like Aluffi&#39;s &quot;Algebra: Chapter 0&quot;. More category theoretic than other options, which might appeal to the CS side a bit as well.</p>" }, "attachment": [], "tag": [ { "type": "Mention", "href": "https://mathstodon.xyz/users/cappallo", "name": "@cappallo" } ], "replies": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109427839533468027/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mathstodon.xyz/users/siddharth64/statuses/109427839533468027/replies?only_other_accounts=true&page=true", "partOf": "https://mathstodon.xyz/users/siddharth64/statuses/109427839533468027/replies", "items": [] } }, "likes": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109427839533468027/likes", "type": "Collection", "totalItems": 1 }, "shares": { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109427839533468027/shares", "type": "Collection", "totalItems": 0 } } }, { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109361296330774532/activity", "type": "Announce", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2022-11-17T21:35:52Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/nilesjohnson", "https://mathstodon.xyz/users/siddharth64/followers" ], "object": "https://mathstodon.xyz/users/nilesjohnson/statuses/109360792571212730" }, { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109342798473939088/activity", "type": "Announce", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2022-11-14T15:11:37Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/ereliuer_eteer", "https://mathstodon.xyz/users/siddharth64/followers" ], "object": "https://mathstodon.xyz/users/ereliuer_eteer/statuses/109340547329312790" }, { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109340061259863157/activity", "type": "Announce", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2022-11-14T03:35:30Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/ereliuer_eteer", "https://mathstodon.xyz/users/siddharth64/followers" ], "object": "https://mathstodon.xyz/users/ereliuer_eteer/statuses/109339856874508329" }, { "id": "https://mathstodon.xyz/users/siddharth64/statuses/109340061009279318/activity", "type": "Announce", "actor": "https://mathstodon.xyz/users/siddharth64", "published": "2022-11-14T03:35:27Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/ereliuer_eteer", "https://mathstodon.xyz/users/siddharth64/followers" ], "object": "https://mathstodon.xyz/users/ereliuer_eteer/statuses/109339491489826051" } ] }