Cyclicity of nilpotent centers with minimum Andreev number

Algorithmic Derivation of Nilpotent Centers

To characterize when a nilpotent singular point of an analytic differential system is a center is of particular interest, first for the problem of distinguishing between a focus and a center, and after for studying the bifurcation of limit cycles from it or from its period annulus. We give an effective algorithm in the search of necessary conditions for detecting nilpotent centers based in rece...

Finite Groups With a Certain Number of Elements Pairwise Generating a Non-Nilpotent Subgroup

Free weak nilpotent minimum algebras

We give a combinatorial description of the finitely generated free weak nilpotent minimum algebras, and provide explicit constructions of normal forms.

Nilpotent Minimum Fuzzy Description Logics

We define the fuzzy description logic ALCHNM based on the t-norm of Nilpotent Minimum and we prove its reduction to the crisp description logic ALCH. Hence we prove decidability results for ALCHNM.

Valuations in Nilpotent Minimum Logic