2026-05-28T22:58:27Z https://yabu.me Talia Ringer https://yabu.me/npub1h2yzmr4wgqmehn9fwz0y0tjjh3rwngzpmv6vw6n9gkzv3k0u78zqxh3xek https://media.mathstodon.xyz/accounts/avatars/110/848/974/971/762/278/original/ee60e50958c439f9.jpg https://media.mathstodon.xyz/accounts/avatars/110/848/974/971/762/278/original/ee60e50958c439f9.jpg https://yabu.me/nevent1qqs2a49xzcsphrd3p95qycw7hnceqler2dgw96x00hm3fmjuvj0zupczyzagstvw4eqr0x7v49cfu3aw227yd6dqg8dnf3m2v4zcfjxelncugsmtg7k In reply to <a href='/nevent1qqsp8encl0runj3c42ankm77z6dxkzjx7xjzyv0qcm3uu6vqrphlc2g7l0r2a'>nevent1q…0r2a</a><br/>_________________________<br/><br/>it&#39;s very modern stuff 2026-02-12T01:38:58Z https://yabu.me/nevent1qqsp8encl0runj3c42ankm77z6dxkzjx7xjzyv0qcm3uu6vqrphlc2gzyzagstvw4eqr0x7v49cfu3aw227yd6dqg8dnf3m2v4zcfjxelncugvryg6f In reply to <a href='/nevent1qqs2f9fxwxzn7v7ev4jdwaas53x9svazzpjmyvu9khesectuecmst3g67wjy8'>nevent1q…wjy8</a><br/>_________________________<br/><br/><a href="https://www.andrew.cmu.edu/user/avigad/Papers/formal_system_for_euclids_elements.pdf">https://www.andrew.cmu.edu/user/avigad/Papers/formal_system_for_euclids_elements.pdf</a> 2026-02-12T01:37:22Z https://yabu.me/nevent1qqsp8m0qahgd5u7vprhanlgs79c4favmrnewa8c4wv44xaarzrmn4pgzyzagstvw4eqr0x7v49cfu3aw227yd6dqg8dnf3m2v4zcfjxelncuggmezdc In reply to <a href='/nevent1qqs9ptq5aw0m2rde7lh45dhccw4chup0lfrjgk23k232y8h6yaeghzgnd5j7p'>nevent1q…5j7p</a><br/>_________________________<br/><br/>Hilbert seems to strike an unhappy medium. E is meant to mirror Euclid&#39;s proofs very closely, so usability should be at the forefront, but the axiom set is quite large (thankfully the metatheory is well understood though). The student prototype however used a small DTT kernel, then some internal kernel axioms on top of that to model E 2026-02-12T01:27:10Z https://yabu.me/nevent1qqs9ptq5aw0m2rde7lh45dhccw4chup0lfrjgk23k232y8h6yaeghzgzyzagstvw4eqr0x7v49cfu3aw227yd6dqg8dnf3m2v4zcfjxelncugltr6sd In reply to <a href='/nevent1qqswtl98ar3pmahqhx936nm7gwn5q5zpasezfmser64rhyjp049m29glh0cfs'>nevent1q…0cfs</a><br/>_________________________<br/><br/>Tarski actually has a lot of appeal as a kernel too IMO (really small axiom set, decidable proof search) but students felt the axiom set was so, so low-level that it was too hard to build the infrastructure needed to have good usability on top of that 2026-02-12T01:24:18Z https://yabu.me/nevent1qqswtl98ar3pmahqhx936nm7gwn5q5zpasezfmser64rhyjp049m29gzyzagstvw4eqr0x7v49cfu3aw227yd6dqg8dnf3m2v4zcfjxelncugq86y25 In reply to <a href='/nevent1qqs0fcpvejq7u3qxd0t2y543suarhsve2aenrj9eu4nu2sx0atr8w5gq0ejmx'>nevent1q…ejmx</a><br/>_________________________<br/><br/>The work these students did in two weeks of class was genuinely impressive. Can&#39;t wait to see what our proof assistant is like in the end 2026-02-12T01:22:24Z https://yabu.me/nevent1qqs0fcpvejq7u3qxd0t2y543suarhsve2aenrj9eu4nu2sx0atr8w5gzyzagstvw4eqr0x7v49cfu3aw227yd6dqg8dnf3m2v4zcfjxelncugxpaskv The three different Euclidean geometric kernel prototypes are done. Now it is time for the class to converge on one foundations and write our final kernel. It&#39;s looking like E over Tarski and Hilbert. But jury is still out on TT vs. logic, and on LCF vs. de Bruijn 2026-02-12T01:21:20Z https://yabu.me/nevent1qqsrv5cw6wdcg3fgc48030mvg0shthn79zk5duqtndmltryjp9ymuwczyzagstvw4eqr0x7v49cfu3aw227yd6dqg8dnf3m2v4zcfjxelncug5y0497 Hey guys. Our beautiful daughter Sarah Rose El-Kebir was in a hurry to get out and did not want to wait five more weeks. So she entered the world on Friday morning. She&#39;s doing well and I&#39;m doing well. She&#39;s small and needs a bit of extra help, so I&#39;m in and out of the NICU for now. But she&#39;s very strong and she&#39;s doing great in there. Mohammed and I are very in love with her. Feel free to DM for cute baby pics if we know each other personally. 2024-10-06T13:24:36Z https://yabu.me/nevent1qqsqgahfuzd97nfv0ry894srnujen6l6sylne44adtv6xrkpe6mstwszyzagstvw4eqr0x7v49cfu3aw227yd6dqg8dnf3m2v4zcfjxelncug7c3q9v What are some domain-specific program logics people know about? Particularly interested in domains where it&#39;s not obvious that the thing being reasoned about is a &#34;program,&#34; but it can in fact be viewed as such, and so a logic can be built around it. 2024-09-15T17:08:53Z