3 papers
math.GT2004
On Finite Racks and Quandles
Pedro Lopes, Dennis Roseman
We revisit finite racks and quandles using a perspective based on permutations which can aid in the understanding of the structure. As a consequence we recover old results and prov…
math.GT2002
Quandles at Finite Temperatures II
F. Miguel Dionisio, Pedro Lopes
The number of colorings of a knot diagram by a quandle has been shown to be a knot invariant by CJKLS using quandle cohomology methods. In a previous paper by the second named auth…
math.QA2001
Quandles at Finite Temperatures I
Pedro Lopes
In CJKLS quandle cohomology is used to produce invariants for particular embeddings of codimension two; 2-cocycles give to invariants for (classical) knots and 3-cocycles give rise…