Results 11 to 20 of about 7,457 (285)

Stieltjes Perfect Semigroups are Perfect [PDF]

Czechoslovak Mathematical Journal, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bisgaard, Torben Maack, Sakakibara, Nobuhisa   +1 more
openaire   +2 more sources

On the boundedness of equivariant homeomorphism groups [PDF]

Opuscula Mathematica, 2018
Given a principal \(G\)-bundle \(\pi:M\to B\), let \(\mathcal{H}_G(M)\) be the identity component of the group of \(G\)-equivariant homeomorphisms on \(M\). The problem of the uniform perfectness and boundedness of \(\mathcal{H}_G(M)\) is studied.
Jacek Lech, Ilona Michalik, Tomasz Rybicki   +2 more
doaj   +1 more source

On Box-Perfect Graphs [PDF]

, 2016
Let $G=(V,E)$ be a graph and let $A_G$ be the clique-vertex incidence matrix of $G$. It is well known that $G$ is perfect iff the system $A_{_G}\mathbf x\le \mathbf 1$, $\mathbf x\ge\mathbf0$ is totally dual integral (TDI).
Ding, Guoli, Zang, Wenan, Zhao, Qiulan
core   +3 more sources

Periods for rank 1 irregular singular connections on surfaces [PDF]

, 2005
We define a period pairing for flat, irregular singular, rank one connections, satisfying a technical condition regarding its stationary set, on complex surfaces between de Rham cohomology of the connection and a modified singular homology, the rapid ...
Hien, Marco
core   +5 more sources

Criterion for the cosemanticness of the Abelian groups in the enriched signature

Қарағанды университетінің хабаршысы. Математика сериясы, 2018
In the present paper we give a criterion of the cosemanticness relative to the Jonsson spectrum of the model in the class of Abelian groups with a distinguished predicate.
A.R. Yeshkeyev, M.T. Kassymetova, O.I. Ulbrikht   +2 more
doaj   +1 more source

Recognizing the P_4-structure of claw-free graphs and a larger graph class [PDF]

Discrete Mathematics & Theoretical Computer Science, 2002
The P_4-structure of a graph G is a hypergraph \textbfH on the same vertex set such that four vertices form a hyperedge in \textbfH whenever they induce a P_4 in G.
Luitpold Babel, Andreas Brandstädt, Van Bang Le   +2 more
doaj   +1 more source

Perfect implementation [PDF]

Games and Economic Behavior, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Izmalkov, Sergei, Lepinski, Matt, Micali, Silvio   +2 more
openaire   +5 more sources

Generalized perfect numerical semigroups [PDF]

Notes on Number Theory and Discrete Mathematics
In this work, we study the isolated gaps for generalized numerical semigroups, intro- duce generalized perfect numerical semigroups, and exemplify these semigroups.
Mohammad Zmmo, Nesrin Tutaş
doaj   +1 more source

Semi-hyperbolic fibered rational maps and rational semigroups [PDF]

, 2006
We consider fiber-preserving complex dynamics on fiber bundles whose fibers are Riemann spheres and whose base spaces are compact metric spaces. In this context, without any assumption on (semi-)hyperbolicity, we show that the fiberwise Julia sets are ...
Sumi, Hiroki
core   +1 more source

The χ-Boundedness of P2∪P3-Free Graphs

Journal of Mathematics, 2022
In the early 1980s, Gyárfás introduced the concept of the χ-bound with χ-binding functions thereby extending the notion of perfectness. There are a number of challenging conjectures about the χ-bound.
Xiao Wang, Donghan Zhang
doaj   +1 more source