{"items":[{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2026-01-21 01:09:22.093Z","domain":"mathstodon.xyz","followerCount":2469,"followers":"https://mathstodon.xyz/users/j_bertolotti/followers","following":"https://mathstodon.xyz/users/j_bertolotti/following","followingCount":330,"icon":"https://media.mathstodon.xyz/accounts/avatars/109/246/464/168/164/998/original/fd737a375bd6a2dd.jpg","id":"9swym8tijl808y9","inbox":"https://mathstodon.xyz/users/j_bertolotti/inbox","iri":"https://mathstodon.xyz/users/j_bertolotti","isLocal":false,"last_fetched":"2026-01-28 22:47:35.664Z","outbox":"https://mathstodon.xyz/users/j_bertolotti/outbox","preferred_username":"j_bertolotti","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1vmLwe6Y8faYh2d4G3kY\n6/1qzdhR7e8vq4rZ99cqvFxEGh2KdoQ2yRya6S2cRNzZtEFLGQgmBuTVNFDiNjwq\n1Nlb4GOwFveufgi5P8CxpPonW0PfKFyRalVXhextILaUF34SMPCn5X1Ks09BJjIR\nijpgQAvdlYW/suOEbnnwgOcLRz7RR569nGyKazVG6W79TNAttPRwf7RNHRmiYLyh\nMf4tEq54hDVE1OEv0+lMEdS3ptVtyha4W8Y7HgbjXrIEI7We5FjNcfWqAbntMP+Q\nwNpwwFw+C2wEu491G3wx/MpJHBRNt4X0rq6RSsl0lw0ItKrL+ZH3vchjYwLKWAaz\nPQIDAQAB\n-----END PUBLIC KEY-----\n","published":"2022-10-28 00:00:00.000Z","summary":"

Associated Professor of Physics at the University of Exeter.
Scientific visualizations (grouped under the hastag #PhysicsFactlet).
He/lui/on. All opinions are my own fault.

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Professor at the University of Birmingham, UK.
I am interested in constructive mathematics and (constructive and non-constructive) homotopy type theory and univalent foundations, connections of topology with computation, (infinity) topos theory, locale theory, domain theory, combinatorial game theory and much more.

See my meta-blog:
https://cs.bham.ac.uk/~mhe/blog.html

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Professor, PL/FM/SE at UIUC. Proof automation. SIGPLAN-M Founder, CCF President. They/them, ND, bi.

","updated":"2026-01-28 22:08:43.416Z","user":"","username":"Talia Ringer"},{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2026-01-13 23:11:34.439Z","domain":"mathstodon.xyz","followerCount":1785,"followers":"https://mathstodon.xyz/users/fractalkitty/followers","following":"https://mathstodon.xyz/users/fractalkitty/following","followingCount":1465,"icon":"https://media.mathstodon.xyz/accounts/avatars/000/268/181/original/8b9019159c42f1a7.jpg","id":"up35bmszzhfgxl4","inbox":"https://mathstodon.xyz/users/fractalkitty/inbox","iri":"https://mathstodon.xyz/users/fractalkitty","isLocal":false,"last_fetched":"2026-01-28 22:47:35.783Z","outbox":"https://mathstodon.xyz/users/fractalkitty/outbox","preferred_username":"fractalkitty","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4BjyoDxzWYUeDrHlvRLE\nyLdTewxRzVGvPpNSODjnPOgNTQjYMLyIRT+6PLWCbsykQ6ckovOdj4DmAlFYG4Fn\nhnskuosXgoQZ0vk+GtpuSFYGVt2/B0tZVSGXCoKaTl+K0gThXtz56ryzLbjLNuSt\n/6vHSXcD1s18UPNj1FNygB1QOr1zbhP52cdi1JnkKEfzEBoFViXjxF1hpNxOZXfA\nXUEJBytwPRnQS6GBka655AdEHrrCYknH5h1qvng6CtTyF78XcbFimVvlwT5C7lg9\n8LcABF4V1OWVw4etZAWuVx22eQ6bZ1Xim6rEfGjS5dKmk29Bsy/P0opMqTSfBzL8\nUQIDAQAB\n-----END PUBLIC KEY-----\n","published":"2021-11-24 00:00:00.000Z","summary":"

Math-obsessed perpetual asker of why. Random task penguin. Life thoughts are often in haiku. (She/her). 

Profile picture is a self portrait. Portrait with crows flying from head, with beach and self flying a Klein bottle kite. Beach has piano keys and ear has a möbius ring. Sky has roadway lines coming to a vanishing point with piano keys. Blues and grays.

","updated":"2026-01-28 22:47:35.783Z","user":"","username":"Fractal Kitty"},{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2026-01-07 16:30:52.728Z","domain":"mathstodon.xyz","followerCount":1265,"followers":"https://mathstodon.xyz/users/noneuclideandreamer/followers","following":"https://mathstodon.xyz/users/noneuclideandreamer/following","followingCount":365,"icon":"https://media.mathstodon.xyz/accounts/avatars/109/603/333/003/783/272/original/86f17168ae424eff.jpg","id":"kmu587qoh8x5hql","inbox":"https://mathstodon.xyz/users/noneuclideandreamer/inbox","iri":"https://mathstodon.xyz/users/noneuclideandreamer","isLocal":false,"last_fetched":"2026-01-28 22:47:35.844Z","outbox":"https://mathstodon.xyz/users/noneuclideandreamer/outbox","preferred_username":"noneuclideandreamer","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwy8o6ICKWaHgK7Qacdal\nHLUds6wpPqvsIEgKvpS4YgTvOnzV25FIbg4Q5bPsyOScFSyLhMylYuhfd5zKs35u\na4LStJPZBpBV69X2JnXi7lja/+IZ2ejOrrO39mOdAY76geU7oHTENlllpqpa+DT+\nIEHn62N2vagSWK5aW/Cgqy23mZM/H5BkeAr3iHOttn+FQiYhAWQOZ2wshZA8TkuT\nHVuFAMxGv+0OA0/Ma02Lc13qDPGG4ARghy0oHNvsCHvtNTmICPEAv4DKUiv3sm3d\nJUMa37zJpoq3kx2NtRQSOIe4PR5ykXcq7HyHC3QJCTMzusp7lq2FLIfeJ4c6nqEM\nwQIDAQAB\n-----END PUBLIC KEY-----\n","published":"2022-12-30 00:00:00.000Z","summary":"

Math teacher & parent by day, creative coder by night.

https://Patreon.com/noneuclideandreamer

","updated":"2026-01-28 22:47:35.844Z","user":"","username":"Non-Euclidean Dreamer"}],"page":1,"perPage":10,"totalItems":0,"totalPages":0}

tank

Following