2 papers
math.AG2025
Pentagramma Mirificum. II
Vadim Schechtman
This article is a continuation of my previous paper on miraculous pentagrams published in Annales Scientifiques de Faculté des Sciences de Toulouse in 2013. We discuss the moduli s…
math.CO2025
Bruhat operads
Gleb Koshevoy, Vadim Schechtman, with Appendix by Daria Poliakova
We describe some planar operads built from the higher Bruhat orders and show that they admit a multiplication.