Results 71 to 80 of about 476,988 (354)

On convex permutations

open access: yesDiscrete Mathematics, 2011
AbstractA selection of points drawn from a convex polygon, no two with the same vertical or horizontal coordinate, yields a permutation in a canonical fashion. We characterise and enumerate those permutations which arise in this manner and exhibit some interesting structural properties of the permutation class they form.
Albert, M.H.   +4 more
openaire   +4 more sources

The dual nature of TDC – bridging dendritic and T cells in immunity

open access: yesFEBS Letters, EarlyView.
TDC are hematopoietic cells combining dendritic and T cell features. They reach secondary lymphoid organs (SLOs) and peripheral organs (liver and lungs) after FLT3‐dependent development in the bone marrow and maturation in the thymus. TDC are activated and enriched in SLOs upon viral infection, suggesting that they might play unique immune roles, since
Maria Nelli, Mirela Kuka
wiley   +1 more source

On disjoint cross intersecting families of permutations [PDF]

open access: yesDiscrete Mathematics Letters, 2022
Nuttanon Songsuwan   +4 more
doaj   +1 more source

A new generation tree for permutations, preserving the number of fixed points [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2014
We describe a new uniform generation tree for permutations with the specific property that, for most permutations, all of their descendants in the generation tree have the same number of fixed points.
Philippe Duchon, Romaric Duvignau
doaj   +1 more source

On unfair permutations

open access: yesStatistics & Probability Letters, 2018
In this paper we study the inverse of so-called unfair permutations, and explore various properties of them. Our investigation begins with comparing this class of permutations with uniformly random permutations, and showing that they behave very much alike for locally dependent random variables.
Arslan, İlker   +2 more
openaire   +6 more sources

Leveraging current insights on IL‐10‐producing dendritic cells for developing effective immunotherapeutic approaches

open access: yesFEBS Letters, EarlyView.
In vivo IL‐10 produced by tissue‐resident tolDC is involved in maintaining/inducing tolerance. Depending on the agent used for ex vivo tolDC generation, cells acquire common features but prime T cells towards anergy, FOXP3+ Tregs, or Tr1 cells according to the levels of IL‐10 produced. Ex vivo‐induced tolDC were administered to patients to re‐establish/
Konstantina Morali   +3 more
wiley   +1 more source

On Minimal Strings Containing the Elements of S_n by Decimation [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2001
The permutations by decimation problem is thought to be applicable to computer graphics, and raises interesting theoretical questions in combinatory theory.We present the results of some theoretical and practical investigation into this problem.We show ...
Robert Erra, Nik Lygeros, Nigel Stewart
doaj   +1 more source

Estimation of parameters in non uniform models on permutations [PDF]

open access: yes, 2013
Using large deviation results for a uniformly random permutation in $S_n$, asymptotics of normalizing constants are computed and limits of permutations obtained for some non uniform distributions on $S_n$.
S. Mukherjee
semanticscholar   +1 more source

Scaffold permutations

open access: yesDiscrete Mathematics, 1989
AbstractThe so-called in-order of the vertices of a binary tree T, as used in the data structure literature, is defined by the rule that each vertex follows all vertices of its left subtree, and precedes all those of its right subtree. Now, label the n vertices of T from 1 to n according to the shelling order, the root being labelled 1, the vertices at
openaire   +2 more sources

Permutations and the loop [PDF]

open access: yesJournal of High Energy Physics, 2008
13+7 pages, 9 figures; references added, minor ...
openaire   +4 more sources

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