加载中…
In his quest to disprove a claim by Peirce that all lattices are distributive, Ernst Schr"oder considered 135 years ago a list of 990 equational laws on quasigroups, analogous to associativity, such as . A quasigroup is a non-associative analogue of groups, specifically a set equipped with multiplication and right/left conjugate-division operations that are compatible. Each equation of interest identifies two three-variable expressions built from these operations. I determine all equivalence classes of their conjunctions, and all implications between them. This includes as a small corner the five-element non-distributive lattice identified by Schr"oder.

生成讲解博客的中文版本

生成AI智能校验的中文版本