Combinatorics - Open Access .click

Results 121 to 130 of about 144,275 (215)

Exactness and the topology of the space of invariant random equivalence relations

Proceedings of the London Mathematical Society, Volume 132, Issue 5, May 2026.
Abstract We characterize exactness of a countable group Γ$\Gamma$ in terms of invariant random equivalence relations (IREs) on Γ$\Gamma$. Specifically, we show that Γ$\Gamma$ is exact if and only if every weak limit of finite IREs is an amenable IRE.
Héctor Jardón‐Sánchez +3 more
wiley +1 more source

Cutting Planes in Combinatorics

European Journal of Combinatorics, 1985
The author uses two combinatorial problems: packing diamonds into a Chinese checkerboard nd Deza's proof of a conjecture of Erdős and Lovàsz [\textit{M. Deza}, J. Comb. Theory, Ser. B, 16, 166-167 (1974; Zbl 0263.05007)] to illustrate how Gomory's cutting plane method for solving integer linear programming problems can be used to solve combinatorial ...
openaire +2 more sources

Penalty method for unilateral contact problem with Coulomb's friction in time-fractional derivatives

Demonstratio Mathematica
The purpose of this work is to study a mathematical model that describes a contact between a deformable body and a rigid foundation. A linear viscoelastic Kelvin-Voigt constitutive law with time-fractional derivatives describes the material’s behavior ...
Essafi Lakbir, Bouallala Mustapha
doaj +1 more source

Note on extremal problems about connected subgraph sums. [PDF]

Graphs Comb
Cambie S, Groenland C.
europepmc +1 more source

Photography Did Not Kill Painting: On Artificial Intelligence and the Future of Academic Medicine. [PDF]

Int Neurourol J
Kim JW.
europepmc +1 more source

Computing and Combinatorics

Theoretical Computer Science, 2014
Ding-Zhu Du, Guochuan Zhang
openaire +1 more source

Combinatorics and complexity of chimpanzee (Pan troglodytes) facial signals. [PDF]

Anim Cogn
Florkiewicz BN, Lazebnik T.
europepmc +1 more source

Can geometric combinatorics improve RNA branching predictions? [PDF]

BMC Bioinformatics
Poznanović S, Cardwell O, Heitsch C.
europepmc +1 more source

Quantum higher-order Fourier analysis and the Clifford hierarchy. [PDF]

Proc Natl Acad Sci U S A
Bu K, Gu W, Jaffe A.
europepmc +1 more source