G'abor Cz'edli

collaborators

4 papers

math.RA2026

Accumulation points of congruence densities of finite lattices

GÃ¡bor CzÃ©dli

Let $W$ be a nontrivial variety of lattices, and let $L$ be a finite lattice in $W$ . The congruence density of $L$ with respect to $W$ is the number of c…

math.RA2026

Lattices with congruence densities larger than $3/32$

GÃ¡bor CzÃ©dli

By a 1997 result of R. Freese, an $n$ -element lattice has at most $2^{n - 1}$ congruences. This motivates us to define the congruence density cd $(L)$ of a finite $n$ -element lattice…

math.RA2024

Four generators of an equivalence lattice with consecutive block counts

GÃ¡bor CzÃ©dli

The block count of an equivalence $I^¼ \in$ Equ $(A)$ is the number blnum $(I^¼)$ of blocks of (the partition corresponding to) $I^¼$ . We say that $X = {I^¼_{1}, I^¼_{2}, I^¼_{3}, I^¼_{4}}$ is a four-e…

math.CO2024

Duality for pairs of upward bipolar plane graphs and submodule lattices

GÃ¡bor CzÃ©dli

Let $G$ and $H$ be acyclic, upward bipolarly oriented plane graphs with the same number $n$ of edges. While $G$ can symbolize a flow network, $H$ has only a controlling role. Let $…

Accumulation points of congruence densities of finite lattices

Lattices with congruence densities larger than 3/32

Four generators of an equivalence lattice with consecutive block counts

Duality for pairs of upward bipolar plane graphs and submodule lattices

Lattices with congruence densities larger than $3/32$