Results 31 to 40 of about 532 (199)

Homomesy in products of two chains [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2013
Many cyclic actions $τ$ on a finite set $\mathcal{S}$ ; of combinatorial objects, along with a natural statistic $f$ on $\mathcal{S}$, exhibit ``homomesy'': the average of $f$ over each $τ$-orbit in $\mathcal{S} $ is the same as the average of $f$ over ...
James Propp, Tom Roby
doaj   +1 more source

Applications of stochastic analysis and algebra to machine learning [PDF]

open access: yes, 2023
In this thesis we consider the application of tools from stochastic analysis and algebra to statistics and machine learning. Most of these tools are different forms of what has become known as signature methods.
Bonnier, Patric Ossian Mauritz
core   +2 more sources

Superatomic Boolean algebras constructed from strongly unbounded functions [PDF]

open access: yes, 2010
Using Koszmider's strongly unbounded functions, we show the following consistency result: Suppose that $\kappa,\lambda$ are infinite cardinals such that $\kappa^{+++} \leq \lambda$, $\kappa^{
Martinez, Juan Carlos, Soukup, Lajos
core   +2 more sources

On the homological classification of pomonoids: atomic posemilattices [PDF]

open access: yes, 2013
Between dierent and relatively well investigated so-called flatness properties of S-posets there is a property called property (Pw) which, so far, has not received much attention.
Kilp, Mati
core   +2 more sources

Base Axioms of Modular Supermatroids

open access: yesJournal of Applied Mathematics, 2014
This paper studies axiom systems of supermatroids. Barnabei et al.'s base axioms concerning poset matroids (i.e., distributive supermatroids) are generalized to modular supermatroids, and a mistake in the proof of base axioms of poset matroids is pointed
Xiaonan Li, Sanyang Liu
doaj   +1 more source

Maximal 0-1-fillings of moon polyominoes with restricted chain lengths and rc-graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2011
We show that maximal 0-1-fillings of moon polynomials, with restricted chain lengths, can be identified with certain rc-graphs, also known as pipe dreams.
Martin Rubey
doaj   +1 more source

On Morita equivalence of partially ordered semigroups with local units [PDF]

open access: yes, 2011
We show that for two partially ordered semigroups S and T with common local units, there exists a unitary Morita context with surjective maps if and only if the categories of closed right S- and T-posets are ...
Tart, Lauri
core   +2 more sources

The topology of restricted partition posets [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2011
For each composition $\vec{c}$ we show that the order complex of the poset of pointed set partitions $Π ^• _{\vec{c}}$ is a wedge of $β\vec{c}$ spheres of the same dimensions, where $β\vec{c}$ is the number of permutations with descent composition ^$\vec{
Richard Ehrenborg, JiYoon Jung
doaj   +1 more source

Random and deterministic versions of extremal poset problems [PDF]

open access: yes, 2016
Let P(n) denote the set of all subsets of {1,...,n} and let P(n,p) be the set obtained from P(n) by selecting elements independently at random with probability p. The Boolean lattice is a partially ordered set, or poset, consisting of the elements of P(n)
Hogenson, Kirsten Ann
core   +2 more sources

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