Results 71 to 80 of about 54,737 (202)

Asymptotic behavior of pullback attractors for non-autonomous micropolar fluid flows in 2D unbounded domains

open access: yesElectronic Journal of Differential Equations, 2018
In this article, we investigate the pullback asymptotic behavior of solutions for a non-autonomous micropolar fluid flows in 2D unbounded channel-like domains. First, applying the technique of truncation functions, decomposition of spatial domain, and
Wenlong Sun, Yeping Li
doaj  

Infinity‐operadic foundations for embedding calculus

open access: yesJournal of Topology, Volume 19, Issue 2, June 2026.
Abstract Motivated by applications to spaces of embeddings and automorphisms of manifolds, we consider a tower of ∞$\infty$‐categories of truncated right modules over a unital ∞$\infty$‐operad O$\mathcal {O}$. We study monoidality and naturality properties of this tower, identify its layers, describe the difference between the towers as O$\mathcal {O}$
Manuel Krannich, Alexander Kupers
wiley   +1 more source

Perverse pullbacks

open access: yes
115 ...
Khan, Adeel A.   +3 more
openaire   +2 more sources

Perinormality in pullbacks [PDF]

open access: yesJournal of Commutative Algebra, 2019
We further develop the notion of perinormality from our last paper, showing that it is preserved by many pullback constructions. In doing so, we introduce the concepts of relative perinormality and fragility for ring extensions.
Epstein, Neil, Shapiro, Jay
openaire   +4 more sources

Pullback attractors for a class of semilinear nonclassical diffusion equations with delay

open access: yesElectronic Journal of Differential Equations, 2016
In this article, we analyze the existence of solutions for a nonclassical reaction-diffusion equation with critical nonlinearity, a time-dependent force with exponential growth and delayed force term, where the delay term can be entrained by a ...
Hafidha Harraga, Mustapha Yebdri
doaj  

Use of apertures in single‐energy pristine Bragg peak FLASH radiotherapy

open access: yesJournal of Applied Clinical Medical Physics, Volume 27, Issue 5, May 2026.
Abstract Background Proton single‐energy Bragg peak (SEBP) FLASH delivery can achieve dosimetric distributions equivalent to conventional intensity‐modulated proton therapy (IMPT). However, range‐pulling and field compensator devices enlarge the proton pencil beam spot size, increasing lateral penumbra and compromising dose conformality and high‐dose ...
Yangguang Ma   +15 more
wiley   +1 more source

Pullbacks of Hermitian Maass lifts [PDF]

open access: yesJournal of Number Theory, 2015
We consider pullbacks of hermitian Maass lifts of degree 2 to the diagonal matrices. By using the pullbacks, we give an explicit formura for central values of L-functions for GL(2)*GL(2).
openaire   +3 more sources

Degree theory for 4‐dimensional asymptotically conical gradient expanding solitons

open access: yesCommunications on Pure and Applied Mathematics, Volume 79, Issue 5, Page 1151-1298, May 2026.
Abstract We develop a new degree theory for 4‐dimensional, asymptotically conical gradient expanding solitons. Our theory implies the existence of gradient expanding solitons that are asymptotic to any given cone over S3$S^3$ with non‐negative scalar curvature. We also obtain a similar existence result for cones whose link is diffeomorphic to S3/Γ$S^3/\
Richard H. Bamler, Eric Chen
wiley   +1 more source

Pullback preserving functors

open access: yesJournal of Pure and Applied Algebra, 1991
A partial geometric morphism between topoi is a functor \(f: S\to T\) which has a pullback preserving left adjoint \(f^*\). Pullback preserving functors and other technical details are discussed in the first two sections. The main result of the paper appears in the third section; it asserts that pullback preserving functors are codiscrete cofibrations ...
Rosebrugh, Robert, Wood, R.J.
openaire   +1 more source

Upper Semicontinuity of Pullback Attractors for the 3D Nonautonomous Benjamin-Bona-Mahony Equations

open access: yesThe Scientific World Journal, 2014
We will study the upper semicontinuity of pullback attractors for the 3D nonautonomouss Benjamin-Bona-Mahony equations with external force perturbation terms. Under some regular assumptions, we can prove the pullback attractors 𝒜ε(t) of equation ut-Δut-
Xinguang Yang   +3 more
doaj   +1 more source

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