Results 31 to 40 of about 41,670 (161)

Inferring microRNA regulation of mRNA with partially ordered samples of paired expression data and exogenous prediction algorithms. [PDF]

open access: yesPLoS ONE, 2012
MicroRNAs (miRs) are known to play an important role in mRNA regulation, often by binding to complementary sequences in "target" mRNAs. Recently, several methods have been developed by which existing sequence-based target predictions can be combined with
Brian Godsey, Diane Heiser, Curt Civin
doaj   +1 more source

$q$-Rationals and Finite Schubert Varieties

open access: yesComptes Rendus. Mathématique, 2023
The classical $q$-analogue of the integers was recently generalized by Morier-Genoud and Ovsienko to give $q$-analogues of rational numbers. Some combinatorial interpretations are already known, namely as the rank generating functions for certain ...
Ovenhouse, Nicholas
doaj   +1 more source

Universal Infinite Partially Ordered Sets [PDF]

open access: yesProceedings of the American Mathematical Society, 1956
Introduction. The purpose of this paper is to construct for each infinite cardinal X an M-universal partially ordered set in which every partially ordered set of cardinality N can be embedded. An R-universal partially ordered set of cardinality 2H is constructed for every infinite cardinal N.
openaire   +1 more source

Algorithmics of Posets Generated by Words Over Partially Commutative Alphabets (Extended) [PDF]

open access: yesScientific Annals of Computer Science, 2013
It is natural to try to relate partially ordered sets (posets in short) and classes of equivalent words over partially commutative alphabets. Their common graphical representation are Hasse diagrams.
Ł. Mikulski   +2 more
doaj   +1 more source

Positive Solutions for a Class of Singular Boundary Value Problems with Fractional q-Difference Equations

open access: yesJournal of Function Spaces, 2015
We discuss a class of singular boundary value problems of fractional q-difference equations. Some existence and uniqueness results are obtained by a fixed point theorem in partially ordered sets. Finally, we give an example to illustrate the results.
Jufang Wang, Changlong Yu, Yanping Guo
doaj   +1 more source

Coupled Fixed Point Theorem for the Generalized Langevin Equation with Four-Point and Strip Conditions

open access: yesAdvances in Mathematical Physics, 2022
By considering a metric space with partially ordered sets, we employ the coupled fixed point type to scrutinize the uniqueness theory for the Langevin equation that included two generalized orders.
Ahmed Salem, Noorah Mshary
doaj   +1 more source

Investigating Skew Derivations on Partially Ordered Sets: A Generalized Approach

open access: yesJournal of Mathematics
The main goal of this article is to discuss skew derivations on posets under certain criteria, some of which are novel. Moreover, a few examples illustrate that various restrictions forced within the framework of these results’ assumptions cannot be ...
Ahmed Abdelwanis   +3 more
doaj   +1 more source

Matroids on Partially Ordered Sets

open access: yesAdvances in Applied Mathematics, 1998
The concept of a matroid is known to be a fundamental concept in combinatorics and it is also known to be ubiquitous in mathematics in general (e.g., stratification of Grassmanians, arrangements of hyperplanes, optimization). In the literature there exist attempts to generalize this concept.
Barnabei, Marilena   +2 more
openaire   +1 more source

Distributive partially ordered sets [PDF]

open access: yesFundamenta Mathematicae, 1984
The authors investigate distributive lower (i.e. meet-) semilattices: defined so that the meet is distributive over all existing joins. They generalize the results of \textit{W. H. Cornish} and \textit{R. C. Hickman} [Acta Math. Acad. Sci. Hung. 32, 5-16 (1978; Zbl 0497.06005)], to some extent.
Hickman, R. C., Monro, G. P.
openaire   +2 more sources

On lattice of Basic Z-Ideals

open access: yesپژوهش‌های ریاضی, 2021
For an f-ring  with bounded inversion property, we show that  , the set of all basic z-ideals of , partially ordered by inclusion is a bounded distributive lattice.
Ali Taherifar
doaj  

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