Results 1 to 10 of about 282,334 (269)

DEGENERATE DISTRIBUTED CONTROL SYSTEMS WITH FRACTIONAL TIME DERIVATIVE

open access: yesUral Mathematical Journal, 2016
The existence of a unique strong solution for the Cauchy problem to semilinear nondegenerate fractional differential equation and for the generalized Showalter–Sidorov problem to semilinear fractional differential equation with degenerate operator at the
Marina V. Plekhanova
doaj   +1 more source

Nucleosomal DNA has topological memory

open access: yesNature Communications
One elusive aspect of the chromosome architecture is how it constrains the DNA topology. Nucleosomes stabilise negative DNA supercoils by restraining a DNA linking number difference (∆Lk) of about −1.26.
Joana Segura   +5 more
doaj   +1 more source

RAINBOW VERTEX CONNECTION NUMBER OF BULL GRAPH, NET GRAPH, TRIANGULAR LADDER GRAPH, AND COMPOSITION GRAPH (P_n [P_1 ])

open access: yesBarekeng
The rainbow connection was first introduced by Chartrand in 2006 and then in 2009 Krivelevich and Yuster first time introduced the rainbow vertex connection. Let graph be a connected graph.
Muhammad Ilham Nurfaizi Annadhifi   +3 more
doaj   +1 more source

Large Sets in Boolean and Non-Boolean Groups and Topology

open access: yesAxioms, 2017
Various notions of large sets in groups, including the classical notions of thick, syndetic, and piecewise syndetic sets and the new notion of vast sets in groups, are studied with emphasis on the interplay between such sets in Boolean groups.
Ol’ga V. Sipacheva
doaj   +1 more source

Primary decomposition in the smooth concordance group of topologically slice knots

open access: yesForum of Mathematics, Sigma, 2021
We address primary decomposition conjectures for knot concordance groups, which predict direct sum decompositions into primary parts. We show that the smooth concordance group of topologically slice knots has a large subgroup for which the conjectures ...
Jae Choon Cha
doaj   +1 more source

Tilings in topological spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1999
A tiling of a topological space X is a covering of X by sets (called tiles) which are the closures of their pairwise-disjoint interiors. Tilings of ℝ2 have received considerable attention (see [2] for a wealth of interesting examples and results as well ...
F. G. Arenas
doaj   +1 more source

Free Boolean Topological Groups

open access: yesAxioms, 2015
Known and new results on free Boolean topological groups are collected. An account of the properties that these groups share with free or free Abelian topological groups and properties specific to free Boolean groups is given.
Ol’ga Sipacheva
doaj   +1 more source

On the initial singularity and extendibility of flat quasi-de Sitter spacetimes

open access: yesJournal of High Energy Physics, 2023
Inflationary spacetimes have been argued to be past geodesically incomplete in many situations. However, whether the geodesic incompleteness implies the existence of an initial spacetime curvature singularity or whether the spacetime may be extended ...
Ghazal Geshnizjani   +2 more
doaj   +1 more source

From Music Performance to Prescription: A Guide for Musicians and Health Professionals

open access: yesMusic & Science
Through social prescribing, healthcare systems can systematically support musical care by connecting individuals with community music programs and skilled practitioners.
Melissa Forbes   +3 more
doaj   +1 more source

GROUP CLASSIFICATION FOR A GENERAL NONLINEAR MODEL OF OPTIONS PRICING

open access: yesUral Mathematical Journal, 2016
We consider a family of equations with two free functional parameters containing the classical Black–Scholes model, Schönbucher–Wilmott model, Sircar–Papanicolaou equation for option pricing as partial cases.
Vladimir E. Fedorov, Mikhail M. Dyshaev
doaj   +1 more source

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