Results 71 to 80 of about 2,218 (199)

Circle packings, renormalizations, and subdivision rules

open access: yesProceedings of the London Mathematical Society, Volume 132, Issue 4, April 2026.
Abstract In this paper, we use iterations of skinning maps on Teichmüller spaces to study circle packings and develop a renormalization theory for circle packings whose nerves satisfy certain subdivision rules. We characterize when the skinning map has bounded image.
Yusheng Luo, Yongquan Zhang
wiley   +1 more source

Well-posedness and long-time behavior of a non-autonomous Cahn-Hilliard-Darcy system with mass source modeling tumor growth [PDF]

open access: yes, 2014
In this paper, we study an initial boundary value problem of the Cahn-Hilliard-Darcy system with a non-autonomous mass source term $S$ that models tumor growth.
Jiang, Jie, Wu, Hao, Zheng, Songmu
core   +1 more source

Engineered Optical Fibers for Deep‐Tissue Applications

open access: yesAdvanced Optical Materials, Volume 14, Issue 10, 13 March 2026.
This review establishes a foundational framework for designing optical fibers for deep‐tissue medicine. It systematically links material innovations like polymers and hydrogels with structural paradigms to enable state‐of‐the‐art diagnostics, including endoscopy and biosensing, and targeted therapeutics, guiding future clinical translation.
Yuzhen Li   +16 more
wiley   +1 more source

Equivariant toric geometry and Euler–Maclaurin formulae

open access: yesCommunications on Pure and Applied Mathematics, Volume 79, Issue 3, Page 451-557, March 2026.
Abstract We first investigate torus‐equivariant motivic characteristic classes of toric varieties, and then apply them via the equivariant Riemann–Roch formalism to prove very general Euler–Maclaurin‐type formulae for full‐dimensional simple lattice polytopes.
Sylvain E. Cappell   +3 more
wiley   +1 more source

Limiting dynamics for stochastic complex Ginzburg-Landau systems with time-varying delays on unbounded thin domains

open access: yesDemonstratio Mathematica
This study deals with the limiting dynamics for stochastic complex Ginzburg-Landau systems with time-varying delays and multiplicative noise on unbounded thin domains. We first prove the existence and uniqueness of pullback tempered random attractors for
Li Xintao, Pan Shiyao
doaj   +1 more source

A Re‐Examination of Foundational Elements of Cosmology

open access: yesFortschritte der Physik, Volume 74, Issue 3, March 2026.
ABSTRACT This paper undertakes a conceptual re‐examination of several foundational elements of cosmology through the lens of spacetime symmetries. A new derivation of the Friedmann–Lemaître–Robertson–Walker metric is obtained by a careful conceptual examination of rotations and translations on generic manifolds, followed by solving the rotational and ...
Lavinia Heisenberg
wiley   +1 more source

Pullback attractors for a two-phase flow model in an infinite delay case

open access: yesAdvances in Difference Equations, 2017
In this paper we study the existence of solutions for a coupled Allen-Cahn-Navier-Stokes model in two dimensions with an external force containing infinite delay effects in the weighted space C δ ( Y ) $C_{\delta }( \mathbb{Y})$ .
Min Yang
doaj   +1 more source

Pullback Exponential Attractor for Second Order Nonautonomous Lattice System [PDF]

open access: yesDiscrete Dynamics in Nature and Society, 2014
We first present some sufficient conditions for the existence of a pullback exponential attractor for continuous process on the product space of the weighted spaces of infinite sequences. Then we prove the existence and continuity of a pullback exponential attractor for second order lattice system with time-dependent coupled coefficients in the ...
Shengfan Zhou, Hong Chen, Zhaojuan Wang
openaire   +3 more sources

Pre‐IPO Tokens: Trading in the Dark

open access: yesAccounting Perspectives, Volume 25, Issue 1, Page 125-145, March 2026.
ABSTRACT Pre‐IPO tokens offer a new way for individual investors to access the private equity markets. However, without access to the private firm or to regulated public disclosures, token traders operate under extreme information asymmetry. This paper examines the behavior of the pre‐IPO token market around private funding events, such as venture ...
Johnathon Cziffra, Margaret Fong
wiley   +1 more source

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  

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