2 papers
math.CO2026
Bruhat operads II. Multiplicative structures
Gleb Koshevoy, Vadim Schechtman
The Bruhat operads from \cite{KS} are equipped with a structure of operads with multiplication.
math.RA2026
Quaternities, correspondences, and tetrahedron equations (Summa tetralogiae)
Gleb Koshevoy, Vadim Schechtman, Alexander Varchenko
The aim of this note is: (a) to propose a generalization of tetrahedron equations from \cite{S} and of their solutions. Due to appearance of a larger number of parameters the -m…