{"items":[{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2026-04-19 18:49:05.302Z","domain":"mathstodon.xyz","followerCount":0,"followers":"https://mathstodon.xyz/users/upennig/followers","following":"https://mathstodon.xyz/users/upennig/following","followingCount":0,"icon":"https://media.mathstodon.xyz/accounts/avatars/109/292/440/709/696/572/original/6094017a78185c71.jpg","id":"mzaro1vbq3osctb","inbox":"https://mathstodon.xyz/users/upennig/inbox","iri":"https://mathstodon.xyz/users/upennig","isLocal":false,"last_fetched":"2026-04-20 00:05:59.603Z","outbox":"https://mathstodon.xyz/users/upennig/outbox","preferred_username":"upennig","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAohkLZkgCEe6db6Ekvrsf\ngC21D7SV/CVxokkJ/cyS+3HCzyCFwrTjXZqbjxnnbpGLNcY0ntAerJnALpemoYQ/\nv7TxBylGnLmDOl/dwj9ctgQCgYpCa2FRr9kE/n0fAm0fuAPWY1fCdqhO5F7Ssxxz\n44+zIO5UpKB9WflcZtbz2l4hEMuLwyzEyj3tbyYIvkG57jYL26azqlNIfEcgTgaS\ntamIM9btnvE53O/GcxFnQD1rKTrwPDdoG2Ep/HKU5XjicAM+E053USqWShPX0AwX\ngWaymfZdnL0npdJLqYG5vKhw18S+qNvgIj5hzXatuhbzNyvm0fIDp4vbhHgQUhjo\niQIDAQAB\n-----END PUBLIC KEY-----\n","published":"2022-11-05 00:00:00.000Z","summary":"

Senior Lecturer at Cardiff University in Algebra and Topology (he/him)

","updated":"2026-04-20 00:05:59.603Z","user":"","username":"Ulrich Pennig"},{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2026-02-16 09:18:46.458Z","domain":"mathstodon.xyz","followerCount":27,"followers":"https://mathstodon.xyz/users/makotoy/followers","following":"https://mathstodon.xyz/users/makotoy/following","followingCount":92,"icon":"https://media.mathstodon.xyz/accounts/avatars/109/364/860/475/406/020/original/8cfdd51f6d6aa4d3.png","id":"6twuj9v86epigcw","inbox":"https://mathstodon.xyz/users/makotoy/inbox","iri":"https://mathstodon.xyz/users/makotoy","isLocal":false,"last_fetched":"2026-04-20 00:05:59.637Z","outbox":"https://mathstodon.xyz/users/makotoy/outbox","preferred_username":"makotoy","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwm1CwiqGVCDewjGm0o8d\nqgoo5eKdN/VOwgAUgeu4/1bFrMJQRLJlFDJ/aZxufvKVsonYNKyJgzuAwuiZvH68\nRC+Wrj4T+PpDXHFFuA5G2HDdqHcEtHOVZemT7LSOujhTi8Zk83B6oKYFqpS6oONE\nSpWeIdnBQyi39KjZPpf3XXvQpLCxV6zBOqoupDD1sfEFDTYrgyq4joylDxOJQ+jV\na+pS+esaLuKRPqPn1H6srm427F/wXR6INeCA9djf+qBnVCN8+YCbOaaV4jtLdWXZ\n2PsRyePbMVQEas/GJ8Ec90F67hzxsJbAGa+YTw3WC7VZ2QS0GyhAGQRzEwY9ajMY\nGwIDAQAB\n-----END PUBLIC KEY-----\n","published":"2022-11-18 00:00:00.000Z","summary":"

Mathematician in Oslo, Norway (Associate Professor at Department of Mathematics, University of Oslo). Originally from Tokyo, Japan

","updated":"2026-04-20 00:05:59.638Z","user":"","username":"Makoto Yamashita"},{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2025-12-28 11:11:05.387Z","domain":"mathstodon.xyz","followerCount":22023,"followers":"https://mathstodon.xyz/users/tao/followers","following":"https://mathstodon.xyz/users/tao/following","followingCount":113,"icon":"https://media.mathstodon.xyz/accounts/avatars/109/378/244/433/513/115/original/e7134404c3103f9a.jpg","id":"1bgppgc2hjbo18o","inbox":"https://mathstodon.xyz/users/tao/inbox","iri":"https://mathstodon.xyz/users/tao","isLocal":false,"last_fetched":"2026-04-20 00:05:59.678Z","outbox":"https://mathstodon.xyz/users/tao/outbox","preferred_username":"tao","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4Enfn4gs8ae2xG4OkK1P\nAzOXdgzLHvxoHLj1ZzIc+s6N+fYVAh1lO3oCyJ+v8ZOD5Di27yEpwEa3hU+j3ZEF\nIdfKwmfDwTA+tUHj2Dr5Hp8sDBI2Vsz9bKL4x6k1gPE785KIgQSCo6/Id31ZiwXC\n9ZEzKN0MRSKFGPVEuL4u0j85skMNC2DbDCXqvU2Zz88go2n204chp58pTI3xwGwX\nLtAF3grhLGdy9gdHEHpLpTHmUEzserpd4zLjqw5O6NydZTF5DFOazKn2QVx+X1Jz\njY2pvFWc4oXFLBv9IrvoYphTqxpMiOk/qnUxn2NconmcORihSGbObY033ZYy2dbK\noQIDAQAB\n-----END PUBLIC KEY-----\n","published":"2022-11-20 00:00:00.000Z","summary":"

Professor of #Mathematics at the University of California, Los Angeles #UCLA (he/him).

","updated":"2026-04-20 00:05:59.679Z","user":"","username":"Terence Tao"},{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2026-01-01 00:21:48.665Z","domain":"mathstodon.xyz","followerCount":6597,"followers":"https://mathstodon.xyz/users/christianp/followers","following":"https://mathstodon.xyz/users/christianp/following","followingCount":3944,"icon":"https://media.mathstodon.xyz/accounts/avatars/000/000/001/original/b81854b430500fd9.png","id":"mq60cirmuvmcu51","inbox":"https://mathstodon.xyz/users/christianp/inbox","iri":"https://mathstodon.xyz/users/christianp","isLocal":false,"last_fetched":"2026-04-19 22:29:22.236Z","outbox":"https://mathstodon.xyz/users/christianp/outbox","preferred_username":"christianp","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA7styOSrv0MtxMtLfyGqy\niUhAkywIDZKHIeXwBaQoIEM33miw5NJDZIpYazlvi5K1pUsTsFbOXhHFwG39i3yW\nbz7KJeAMp1gqHssmRnkABf1kbVOoY5g2xzMwuIx/yVqmzoYBlgpUDKjwWfHSCwjN\nqWLbsHYUSCoRWKoRzAHBfm5rhXE5BIbB2eaKCCjsIlXLOuRfRPF4x7s7+v+El9d8\nuMFnIivF6H4xQthp6cdfTSEKtNgcbzEYOFmBro12f1Svx98ncylPIxmyG2em6I3m\nVMnoIQf4t/z1dW/vQV1dh+f3QJlx8AMWX4pk2G1C6lT5ji+NST8RY+jFKTIxu4ke\ncQIDAQAB\n-----END PUBLIC KEY-----\n","published":"2017-04-12 00:00:00.000Z","summary":"

Mathematician, koala fan, mathstodon.xyz admin,
⅓ of https://aperiodical.com. He/him

","updated":"2026-04-19 22:29:22.237Z","user":"","username":"Christian Lawson-Perfect"},{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2025-12-29 04:39:16.545Z","domain":"mathstodon.xyz","followerCount":14295,"followers":"https://mathstodon.xyz/users/johncarlosbaez/followers","following":"https://mathstodon.xyz/users/johncarlosbaez/following","followingCount":562,"icon":"https://media.mathstodon.xyz/accounts/avatars/108/205/715/237/591/098/original/23b93c7b653be37c.jpg","id":"0bng8t1flwizdzq","inbox":"https://mathstodon.xyz/users/johncarlosbaez/inbox","iri":"https://mathstodon.xyz/users/johncarlosbaez","isLocal":false,"last_fetched":"2026-04-19 22:58:10.467Z","outbox":"https://mathstodon.xyz/users/johncarlosbaez/outbox","preferred_username":"johncarlosbaez","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvgJHppW3vD2wZm2hxOGs\nkA45SH/pWuvDLEXDBr3NKdKZywgO/IWBDY7vDiFZqrA7nrVv3GvYIOemv44CEl1Z\nJZ4tszs3PYRdfBHHZENkoWneCgfS1Ha1LIxBd9hQNqfD4Z7883QT2UrwXGQD3Vgr\nL+C9XsVPoD5bxDeEgiu8kHqbWdZfin2+J+tfrsoHjx+Y9q32ngXyCUaqssrnfJkw\n+KEwQGkNJob2p1RHYQcQaDdOWjKLfxHlQQJ/FuvV8wxBYYPkW9innQUxGSvgg8R8\nb38SdKXpyH8IYM/mfQnSJU8fRfvxuji+hock4CXdP44iCpyHjGDON1WdYuNXSRwQ\n4wIDAQAB\n-----END PUBLIC KEY-----\n","published":"2022-04-27 00:00:00.000Z","summary":"

I'm a mathematical physicist who likes explaining stuff. I'm the Maxwell Fellow of Public Engagement at the School of Mathematics and the School of Physics and Astronomy at the University of Edinburgh.

Check out my blog Azimuth! I'm also a member of the n-Category Café, a group blog on math with an emphasis on category theory. I also have a YouTube channel, full of talks about math, physics and the future.

","updated":"2026-04-19 22:58:10.467Z","user":"","username":"John Carlos Baez"}],"page":1,"perPage":10,"totalItems":1,"totalPages":1}

Arindam

Following