{"items":[{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2025-12-28 11:11:05.702Z","domain":"mathstodon.xyz","followerCount":3754,"followers":"https://mathstodon.xyz/users/MartinEscardo/followers","following":"https://mathstodon.xyz/users/MartinEscardo/following","followingCount":117,"icon":"https://media.mathstodon.xyz/accounts/avatars/109/248/389/055/834/156/original/34545437c59a4b2e.jpg","id":"kjdaq9z142zck06","inbox":"https://mathstodon.xyz/users/MartinEscardo/inbox","iri":"https://mathstodon.xyz/users/MartinEscardo","isLocal":false,"last_fetched":"2026-04-20 04:26:53.549Z","outbox":"https://mathstodon.xyz/users/MartinEscardo/outbox","preferred_username":"MartinEscardo","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx2ac5rQZjJp6kxBwN3VY\nEWpZIkA7UCG9zUfkN0tW8eOLE3E2yy1p7eOkx7HhSMLc/RnERnimAS03ssGYh7oO\nwZtuajZ+Bwwt8ua538opKgfzsEgbco1G27LSdcSn/TeN6TvDpikLiP5zeQIOfqR1\n59m3ahULsm2ijD7g79uJwZb8x5PggqUc8BiGzBGk7SX75ISyngSG7vDwfKF/xF02\nIHnj4d+8hlJHTBpozcv/rHJdTnjr/NBauEjPwVM2KCtus5KJRCy686NO2RMvpxaT\nAYtLKSK/4/eqakkY3mkkUFl9DSErcgClfcC/a015pFQSs1uhY23mmA1bof2fU6gf\njwIDAQAB\n-----END PUBLIC KEY-----\n","published":"2022-10-28 00:00:00.000Z","summary":"

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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Musiker im Herzen. Banker im Erwerbsjob. Außerdem Ehemann, Christ, Papa, Camper, Zur-Arbeit-Radler, Gassigeher. Grün. Wortspiele, Kalauer und andere Ernsthaftigkeiten. Außen älter als innen.

","updated":"2026-04-20 06:13:40.554Z","user":"","username":"Stefan"},{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2026-01-02 18:08:41.365Z","domain":"chaos.social","followerCount":1206,"followers":"https://chaos.social/users/TeXhackse/followers","following":"https://chaos.social/users/TeXhackse/following","followingCount":417,"icon":"https://assets.chaos.social/accounts/avatars/000/079/835/original/a42e1a0a9242d222.png","id":"evdhcattuf1ij4f","inbox":"https://chaos.social/users/TeXhackse/inbox","iri":"https://chaos.social/users/TeXhackse","isLocal":false,"last_fetched":"2026-04-20 06:13:40.600Z","outbox":"https://chaos.social/users/TeXhackse/outbox","preferred_username":"TeXhackse","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzflPxsxg89h1SHyfhBHp\nPGurdOPMKFoXou4y+bNp3a4/1+VgulN+I13d1oyGKXktckjXvDq9NpvN6o2gzCFY\nNCD7KUBS0epxEeB9tZ6XQkWq2dSiW572Vbgs1JF4LzmxGRIveD4QRB4lxdw5CO4K\n8t2KX8FvRGnjYO6u86V6DXok2FIMXIpSFi1kY3EH0N2zZ/R9lkGhxhckkGEMz7s+\nCzx46btP8avxidcve85ZdFC4k4GwFvBVNzvRMwmtnv5ZzRrkSSucDt+gVKeQjPSn\nF1OkSsvfjizOvTuW0th5kAYaPeoOC1UGkbyxX8TPa8VtuFB8ge+e42r2gbNX1bA6\nHwIDAQAB\n-----END PUBLIC KEY-----\n","published":"2018-08-14 00:00:00.000Z","summary":"

Eigentlich Physikerin. Liebt Typografie und Technik. CCC. Arbeitet daran Dokumentenerstellung mithilfe von TeX/LaTeX leichter zu machen

","updated":"2026-04-20 06:13:40.600Z","user":"","username":"Marei"},{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2026-03-23 17:52:05.834Z","domain":"norden.social","followerCount":1965,"followers":"https://norden.social/ap/users/116277994593982372/followers","following":"https://norden.social/ap/users/116277994593982372/following","followingCount":1361,"icon":"https://media.norden.social/accounts/avatars/116/277/994/593/982/372/original/c1a47823439be124.jpg","id":"s6cy8zvbx35yx8j","inbox":"https://norden.social/ap/users/116277994593982372/inbox","iri":"https://norden.social/ap/users/116277994593982372","isLocal":false,"last_fetched":"2026-04-20 06:13:40.647Z","outbox":"https://norden.social/ap/users/116277994593982372/outbox","preferred_username":"vonfriedland","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4SKtJvtZPZY8OrMApxuy\n8rsMe+9ivyxmvx7mmvmlCn+/lGDLpTxpgehKxfT/LWLnGE9X/odTckvCORXsIaH+\nV4mv3nk0AoyfZN5RMLa6j1eo25s5SdLUt/pfIT1kzPw7yW7VuwU2ZN30NyKewLnv\nTTPumLW1SmpHKLyNEowbrJKCVk0b23BovST4lTGcchnbg/fSz2zT7tXk1WI8eohC\nEdK9H0ZAPyA5/OIsrPUOTIE3Hc8ZWPhiFqNetaZmPDznxdaXi8WPsXKbxkUXt9XY\nPogmghZkxWGewDa2G8E3mNQ9fDpBSQqizcRGU4CsGbRcBJvbeHm2/j/aScJ6Jauc\nXwIDAQAB\n-----END PUBLIC KEY-----\n","published":"2026-03-23 00:00:00.000Z","summary":"

Ich bin als Kind in einen Topf mit Buchstabensuppe gefallen. Mein Lieblingsessen heute: Satiramisù.

"Just be nice whenever you can, and weird whenever you can get away with it."

(Neue Instanz, selbe Substanz - hoffentlich..)

Header: Ein Sommerhaus in den isländischen Farben Blau, Rot und Weiß liegt versteckt zwischen Hügeln und Hecken, im Hintergrund ein (noch) schneebedeckter Gletscher vor tiefblauem Himmel.
Avatar: Schwarz-weißes Portraitbild im Stil eines Jahrbuchfotos aus den 60er Jahren

","updated":"2026-04-20 06:13:40.647Z","user":"","username":"Enno von Friedland"},{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2026-04-08 04:52:34.186Z","domain":"mastodon.social","followerCount":33,"followers":"https://mastodon.social/ap/users/116274352151507166/followers","following":"https://mastodon.social/ap/users/116274352151507166/following","followingCount":77,"icon":"https://files.mastodon.social/accounts/avatars/116/274/352/151/507/166/original/363144635da8db4d.jpeg","id":"deadcy90lvdsexa","inbox":"https://mastodon.social/ap/users/116274352151507166/inbox","iri":"https://mastodon.social/ap/users/116274352151507166","isLocal":false,"last_fetched":"2026-04-20 06:13:40.749Z","outbox":"https://mastodon.social/ap/users/116274352151507166/outbox","preferred_username":"schaefchenwolke2","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAni9I3Fw8ngKT+OUWtzem\nT8LlUReLtaboxxBn98xueYdNFtX4xLu8/Sgif8kMkSwlG656OdqdP7qp+2wJn2Z8\ncnJDlmVwpo++U+xIhnwGIZ/uFVv3d9ddIRHXyfPJ9cj9T/JadxYSr6KTubIELmOM\n2fK+LtErkhmKwgptaMZ7x/iH8KxujZJmXVXJ7vYH0vnP79pW3F4eISwQr+UFPtyN\nT8bfE5ZpFWqZnYdMUW/OzRXPeSo40AAbSh3SZdwhBaVNfcMnJemnbVzQd//2JkwZ\nsc4Q3dbQektYd13woIV7UoYVjPc9mlPBh0vAWpSff6vlZlilXVLccVXDl4IazFo2\npwIDAQAB\n-----END PUBLIC KEY-----\n","published":"2026-03-22 00:00:00.000Z","summary":"

Im Vorbeiflug 2.0

","updated":"2026-04-20 06:13:40.750Z","user":"","username":"Schäfchen"},{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2025-12-28 01:46:47.578Z","domain":"chaos.social","followerCount":20354,"followers":"https://chaos.social/users/Lilith/followers","following":"https://chaos.social/users/Lilith/following","followingCount":63,"icon":"https://assets.chaos.social/accounts/avatars/000/124/118/original/8044a5cc640ea3e0.jpeg","id":"5wraz1mcvks4nyc","inbox":"https://chaos.social/users/Lilith/inbox","iri":"https://chaos.social/users/Lilith","isLocal":false,"last_fetched":"2026-04-20 04:46:34.985Z","outbox":"https://chaos.social/users/Lilith/outbox","preferred_username":"Lilith","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvu5S8GZFFCl/cJ0ZgVoZ\na8bzmaCZDt7R/N8JzsYxrRtZJTuzTkSznEv83pLsVpSSvaHFvWYJYQaEfTQ3UrOw\nuqTIv4U2QdT0w0MM52PFHlNfDEj5PgdAwvPc4qbxVkB/c+gy/KCgQKiKb7nPefy/\nN2GhA1omiw4n+HE5tecpbpGxb6U+p7tUlpYydGMMJnKhSfBS4JaYZIk2A/yxd48E\n1Nk69ClYj/1wlGl4xQPvwsj0V77+bQuJAiH5CREyg+JpyiuXXOayd+D13JL0JWX4\nlKiUKOwX/KwahopK5a6avavAEdGleUWsJ2zjrlTrOVWf5m99GzcvFlNM8oNaoq1l\n7wIDAQAB\n-----END PUBLIC KEY-----\n","published":"2018-11-24 00:00:00.000Z","summary":"

Ich undankbare Göre, da bringen die Techmänner uns einen solch tollen Tag.

Noch souveräner als auf Twitter, noch unseriöser als auf Linkedin.

","updated":"2026-04-20 04:46:34.985Z","user":"","username":"Lilith Wittmann"},{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2025-12-28 02:02:16.440Z","domain":"flipboard.com","followerCount":18311,"followers":"https://flipboard.com/users/Spektrumverlag/followers","following":"https://flipboard.com/users/Spektrumverlag/following","followingCount":0,"icon":"https://cdn.flipboard.com/uploads/avatar/be6797b9b4b70a43793e92acbdd5d3136b6ba70a.png","id":"ngalzindjepzf0d","inbox":"https://flipboard.com/users/Spektrumverlag/inbox","iri":"https://flipboard.com/users/Spektrumverlag","isLocal":false,"last_fetched":"2026-04-20 06:13:40.904Z","outbox":"https://flipboard.com/users/Spektrumverlag/outbox","preferred_username":"Spektrumverlag","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwmKC7OU7yNBrIJZJWxJg\nO6052xivgLA/ZmNYemTmjLkra6OSjqcYcVIm11rraHnK0YTpJC5qmURZQoW/7oHi\nc178LKiyWnUPQXp412p1DQ0GnTC1VK0+Fbsm1LEz1l3mrAmuXWnYcpmmsXdZewyf\ncPjiMHa/yeqwl7gW0lZwwQawMliBxAYzOjl9dAkmYAmRSMjVnJKifleVdL71gEVl\nEvGXiPquYcfI62xG+8SLfcqESuPzyuCrgKTqwWQz8voh3CcYhDZiE1I3WKuh8QwT\nTLnsQq0s6N6gCWn7sHSLywO5Rg6Qc2ZqWO0B2eUk5bZOGpwhbSilTJBHC1pohQ/V\nMQIDAQAB\n-----END PUBLIC KEY-----\n","published":"2024-03-19 22:11:31.000Z","summary":"

Experten aus Wissenschaft und Forschung berichten über die aktuellen Erkenntnisse ihrer Fachgebiete - kompetent, authentisch und verständlich.

Folgen, um Beiträge aus dem offiziellen Spektrum der Wissenschaft Flipboard-Profil zu sehen.

","updated":"2026-04-20 06:13:40.905Z","user":"","username":"Spektrum der Wissenschaft"},{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2025-12-29 19:22:42.949Z","domain":"mastodon.green","followerCount":1199,"followers":"https://mastodon.green/users/NATURSTROM/followers","following":"https://mastodon.green/users/NATURSTROM/following","followingCount":32,"icon":"https://files.mastodon.green/accounts/avatars/108/208/730/376/710/280/original/bf9c4b608aa2acef.png","id":"kxdptyt9nl1u0qe","inbox":"https://mastodon.green/users/NATURSTROM/inbox","iri":"https://mastodon.green/users/NATURSTROM","isLocal":false,"last_fetched":"2026-04-20 06:13:40.958Z","outbox":"https://mastodon.green/users/NATURSTROM/outbox","preferred_username":"NATURSTROM","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuw4aJJcVnxMMIY2Rdg86\nAfwD2ygz3Dqq4NWRX0ap0iAU7Pr7me51QuSyBkNmo981DHN85H3Z69NsQnOo6aS7\nsDmiDz6swNM0ClPTZ8ixC1oxIL1gLZu2ixZTgZW2tKEM3gmRDp3T8FT4NcjnH8xe\nfXlgDl9AAMFaG/yS2usJuNdfE347lDkQz3VgduX7dWvD1zEEAxZ4AfVDVrDZ/0Gh\n/xl8RbMh2wxTSLFKnj513MQnT12EKXUJqRHv6mgaymkarMHsmx2wxH9De9fGxOKz\nyC78n9AiwNgwjRWC0x1SatkyiZWmdXtWZ1B9BzaTdLP/BKIvHY6yGjLMWmhIix+j\nbwIDAQAB\n-----END PUBLIC KEY-----\n","published":"2022-04-28 00:00:00.000Z","summary":"

#Energiewende in allen Facetten seit 1998 – dezentral und bürgernah. Heute größter unabhängiger #Ökostrom-Anbieter in DE. 💚

","updated":"2026-04-20 06:13:40.959Z","user":"","username":"naturstrom"},{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2025-12-31 18:30:16.275Z","domain":"norden.social","followerCount":1840,"followers":"https://norden.social/users/hochbahn/followers","following":"https://norden.social/users/hochbahn/following","followingCount":30,"icon":"https://media.norden.social/accounts/avatars/109/364/162/459/598/651/original/cd3ebeb7b9eee325.jpg","id":"81on2ksn35gi17a","inbox":"https://norden.social/users/hochbahn/inbox","iri":"https://norden.social/users/hochbahn","isLocal":false,"last_fetched":"2026-04-20 06:13:40.980Z","outbox":"https://norden.social/users/hochbahn/outbox","preferred_username":"hochbahn","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtSgNhQc8BHVC5DoV8Ag/\nfP7tvjwYu+00RsqtgGHOPIAYa4qBXsnICUgogsjVIncIOvdnlE/jEwx4LJPrXM9R\nw/sydy02NMAQH6pIFbiNzpZTFSdjVEKJS7fzMJbsiSV+J4DujZUPIZPaShy0f8cH\n/7SI3CtRD8737veJfFHkt9jg1Zlqcguzv+ZxGcu+Fynu4zsEhJVGUFadV2sZyqxm\neDEhjhWcxL5E5L1rThIRrxVJF2OHFsYVik5lAANQU943FhI6sz7dQ9K0+0CqcgSq\nBWCQ0muhUH4StgGZ6WDZr3XlLJTr2aCvrIZWPAWY5v0dYmULWNQhvPRSXZmbdFVJ\nYwIDAQAB\n-----END PUBLIC KEY-----\n","published":"2022-11-18 00:00:00.000Z","summary":"

Moin! Hier posten wir über:

👉 Die #Mobilitätswende. Für ein lebenswertes #Hamburg und 1.5 °C!
👉 Geplante Sperrungen und Umleitungen.

Impressum: https://www.hochbahn.de/de/impressum

","updated":"2026-04-20 06:13:40.980Z","user":"","username":"HOCHBAHN"},{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2026-03-04 12:16:35.573Z","domain":"wisskomm.social","followerCount":412,"followers":"https://wisskomm.social/ap/users/116120336270030851/followers","following":"https://wisskomm.social/ap/users/116120336270030851/following","followingCount":39,"icon":"https://wisskomm.social/system/accounts/avatars/116/120/336/270/030/851/original/204e74a6a0009062.png","id":"8ics7yyt96q9v4y","inbox":"https://wisskomm.social/ap/users/116120336270030851/inbox","iri":"https://wisskomm.social/ap/users/116120336270030851","isLocal":false,"last_fetched":"2026-04-20 06:13:41.019Z","outbox":"https://wisskomm.social/ap/users/116120336270030851/outbox","preferred_username":"rwthaachenuniversity","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsbZ6OshLDHoejfo7HV8G\naPozpy5sQtfUP72sqv/kRjGQWpLQ92V+DxeBJosUY9FiN5NuXflPp9M9uZCuM561\nGZ5zxN+gkn/SyGryXWFKmU7qTOvcQRn37NnR844VQEG03ZiWwbDbeSPTCQ354RWv\nIGEo7FGb5cAxlYHTb6Aqk2CUAP/PGthhjmTC7rqPh3uWTtPlRxOUWSN32ksuUPcy\nCO615J9vEqc00yeEbiPZjPThcmUIs1nXwMUf176J4mbQwAE8R/lKcEowrjZBCtcE\nJ5qe3ForB2taaX2nP+tp/0ipd/8x5CEhDSSl8sWIxmwBDw75IpO5F1CUTYshvaEz\n7wIDAQAB\n-----END PUBLIC KEY-----\n","published":"2026-02-23 00:00:00.000Z","summary":"

➡️ 𝗢𝗳𝗳𝗶𝘇𝗶𝗲𝗹𝗹𝗲𝗿 𝗔𝗰𝗰𝗼𝘂𝗻𝘁 𝗱𝗲𝗿 𝗥𝗪𝗧𝗛 ⬅️
by RWTH-Pressestelle 🙋‍♂️🙋‍♀️
#rwth #rwthaachen #rwthaachenuniversity
➡️ www.rwth-aachen.de/impressum
➡️ www.rwth-aachen.de/datenschutzerklaerung

","updated":"2026-04-20 06:13:41.020Z","user":"","username":"RWTH Aachen University"}],"page":1,"perPage":10,"totalItems":129,"totalPages":13}

Jens-Peter M. Zemke

Following