3 citations · 4 across the 4 of their papers we have counts for
4 papers · 1 filter
Fundamental Heaps for Surface Ribbons and Cocycle Invariants
Masahico Saito, Emanuele Zappala
We introduce the notion of fundamental heap for compact orientable surfaces with boundary embedded in -space, which is an isotopy invariant of the embedding. It is a group, endo…
The derivation problem for quandle algebras
M. Elhamdadi, A. Makhlouf, S. Silvestrov +1
The purpose of this paper is to introduce and investigate the notion of derivation for quandle algebras. More precisely, we describe the symmetries on structure constants providing…
Quantum invariants of framed links from ternary self-distributive cohomology
Emanuele Zappala
The ribbon cocycle invariant is defined by means of a partition function using ternary cohomology of self-distributive structures (TSD) and colorings of ribbon diagrams of a framed…
Braided Frobenius Algebras from certain Hopf Algebras
Masahico Saito, Emanuele Zappala
A braided Frobenius algebra is a Frobenius algebra with braiding that commutes with the operations, that are related to diagrams of compact surfaces with boundary expressed as ribb…