{"id":62973,"date":"2026-07-20T15:26:43","date_gmt":"2026-07-20T15:26:43","guid":{"rendered":"https:\/\/www.newscientist.com\/article\/2580374-auto-draft\/"},"modified":"2026-07-20T15:26:43","modified_gmt":"2026-07-20T15:26:43","slug":"ais-solution-to-87-year-old-riddle-takes-mathematicians-by-surprise","status":"publish","type":"post","link":"https:\/\/hoo.central12.com\/fugic\/2026\/07\/20\/ais-solution-to-87-year-old-riddle-takes-mathematicians-by-surprise\/","title":{"rendered":"AI\u2019s solution to 87-year-old riddle takes mathematicians by surprise"},"content":{"rendered":"Mathematicians have been trying to prove the Jacobian conjecture for nearly a century, but now the Claude Fable 5 AI has apparently found a counterexample that disproves it","protected":false},"excerpt":{"rendered":"<p>Mathematicians have been trying to prove the Jacobian conjecture for nearly a century, but now the Claude Fable 5 AI has apparently found a counterexample that disproves it<\/p>\n","protected":false},"author":883,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1664,450],"tags":[],"class_list":["post-62973","post","type-post","status-publish","format-standard","hentry","category-ai","category-mathematics"],"_links":{"self":[{"href":"https:\/\/hoo.central12.com\/fugic\/wp-json\/wp\/v2\/posts\/62973"}],"collection":[{"href":"https:\/\/hoo.central12.com\/fugic\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hoo.central12.com\/fugic\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hoo.central12.com\/fugic\/wp-json\/wp\/v2\/users\/883"}],"replies":[{"embeddable":true,"href":"https:\/\/hoo.central12.com\/fugic\/wp-json\/wp\/v2\/comments?post=62973"}],"version-history":[{"count":1,"href":"https:\/\/hoo.central12.com\/fugic\/wp-json\/wp\/v2\/posts\/62973\/revisions"}],"predecessor-version":[{"id":62974,"href":"https:\/\/hoo.central12.com\/fugic\/wp-json\/wp\/v2\/posts\/62973\/revisions\/62974"}],"wp:attachment":[{"href":"https:\/\/hoo.central12.com\/fugic\/wp-json\/wp\/v2\/media?parent=62973"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hoo.central12.com\/fugic\/wp-json\/wp\/v2\/categories?post=62973"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hoo.central12.com\/fugic\/wp-json\/wp\/v2\/tags?post=62973"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}