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We give a novel and effective criterion for algebraicity of rational normal analytic surfaces constructed from resolving the singularity of an irreducible curve-germ on $CP^2$ and contracting the strict transform of a given line and all but…

Algebraic Geometry · Mathematics 2012-11-20 Pinaki Mondal

A classical result of variational analysis, known as Attouch theorem, establishes the equivalence between epigraphical convergence of a sequence of proper convex lower semicontinuous functions and graphical convergence of the corresponding…

Optimization and Control · Mathematics 2023-11-21 Aris Daniilidis , David Salas , Sebastián Tapia-García

We develop a real-analytic framework, called perplex analysis, in which the complex, split-complex, and dual numbers arise as members of a single four-parameter family of two-dimensional commutative real algebras. Within this unified…

Complex Variables · Mathematics 2025-12-17 Aurélio Menegon

We consider the 1D cubic NLS on $\mathbb R$ and prove a blow-up result for functions that are of borderline regularity, i.e. $H^s$ for any $s<-\frac 12$ for the Sobolev scale and $\mathcal F L^\infty$ for the Fourier-Lebesgue scale. This is…

Analysis of PDEs · Mathematics 2023-11-29 Valeria Banica , Renato Lucà , Nikolay Tzvetkov , Luis Vega

We develop a fluctuation theory of connectivities for subcritical random cluster models. The theory is based on a comprehensive nonperturbative probabilistic description of long connected clusters in terms of essentially one-dimensional…

Probability · Mathematics 2008-08-28 Massimo Campanino , Dmitry Ioffe , Yvan Velenik

Let $X$ be a real Banach space with an unconditional basis (e.g., $X=\ell_2$ Hilbert space), $\Omega\subset X$ open, $M\subset\Omega$ a closed split real analytic Banach submanifold of $\Omega$, $E\to M$ a real analytic Banach vector…

Complex Variables · Mathematics 2014-02-26 Imre Patyi , Scott Simon

Algebraic topology studies topological spaces with the help of tools from abstract algebra. The main focus of this paper is to show that many concepts from algebraic topology can be conveniently expressed in terms of (normal) factor graphs.…

Information Theory · Computer Science 2018-07-16 Ali Al-Bashabsheh , Pascal O. Vontobel

In this paper, we consider blow-up of solutions to the Cauchy problem for the following fractional NLS, $$ \textnormal{i} \, \partial_t u=(-\Delta)^s u-|u|^{2 \sigma} u \quad \text{in} \,\, \R \times \R^N, $$ where $N \geq 2$, $1/2 <s<1$…

Analysis of PDEs · Mathematics 2024-07-09 Tianxiang Gou , Vicentiu D. Radulescu , Zhitao Zhang

We introduce a symmetric (log-)epiperimetric inequality, generalizing the standard epiperimetric inequality, and we show that it implies a growth-decay for the associated energy: as the radius increases energy decays while negative and…

Analysis of PDEs · Mathematics 2023-04-24 Nick Edelen , Luca Spolaor , Bozhidar Velichkov

We prove that the Crisp and Gow's quiver operation on a finite quiver Q produces a new quiver Q' with fewer vertices, such that the finite dimensional algebras kQ/J^2 and kQ'/J^2 are singularly equivalent. This operation is a general quiver…

Rings and Algebras · Mathematics 2017-10-12 Alireza Nasr-Isfahani

We define an intrinsic symmetric bi-right-exact (and for varieties, bi-cocontinuous) bilinear product on objects of a semi-abelian category, constructed as the cosmash product in the two-nilpotent reflection. When applied to abelian…

Category Theory · Mathematics 2026-05-06 Bo Shan Deval , Manfred Hartl , Tim Van der Linden

Raynaud and Gruson developed the theory of blowing-up an algebraic variety $X$ along a coherent sheaf $M$ in the sense that there exists a blow-up $X'$ of $X$ such that the "strict transform" of $M$ is flat over $X'$ and the blow-up…

Algebraic Geometry · Mathematics 2020-04-14 Agustín Romano Velázquez

This article is the continued version of the analytical blowup solutions for 2-dimensional Euler-Poisson equations \cite{Y1}. With extension of the blowup solutions with radial symmetry for the isothermal Euler-Poisson equations in $R^{2}$,…

Solar and Stellar Astrophysics · Physics 2011-07-28 Manwai Yuen

In this paper we study the Cauchy problem for diffusion equations associated to a class of strongly hypoelliptic pseudo-differential operators on graded Lie groups. To do so, we develop a global complex functional calculus on graded Lie…

Analysis of PDEs · Mathematics 2021-11-16 Duván Cardona , Julio Delgado , Michael Ruzhansky

In this paper we discuss log blow-up's, introduced by Kazuya Kato, and define the concept of log modifications. Using this concept we prove that any morphism f: X ---> Y of locally noetherian fs log schemes with underlying structures of f…

Algebraic Geometry · Mathematics 2021-01-26 Fumiharu Kato

We study the set of log-canonical thresholds (or critical integrability indices) of holomorphic (resp. real analytic) function germs in $\mathbb{C}^2$ (resp. $\mathbb{R}^2$). In particular, we prove that the ascending chain condition holds,…

Classical Analysis and ODEs · Mathematics 2018-02-07 Tristan C. Collins

Let $X$ be a real analytic orbifold. Then each stratum of $X$ is a subanalytic subset of $X$. We show that $X$ has a unique subanalytic triangulation compatible with the strata of $X$. We also show that every ${\rm C}^r$-orbifold, $1\leq…

Geometric Topology · Mathematics 2011-06-07 Marja Kankaanrinta

We study discrete flow equivalence of two-sided topological Markov shifts by using extended Ruelle algebras. We characterize flow equivalence of two-sided topological Markov shifts in terms of conjugacy of certain actions weighted by…

Operator Algebras · Mathematics 2018-05-03 Kengo Matsumoto

There recently has been some interest in the space of functions on an interval satisfying the heat equation for positive time in the interior of this interval. Such functions were characterised as being analytic on a square with the…

Analysis of PDEs · Mathematics 2022-04-28 Alexander Strohmaier , Alden Waters

We consider a piecewise analytic real expanding map $f: [0,1]\to [0,1]$ of degree $d$ which preserves orientation, and a real analytic positive potential $g: [0,1] \to \mathbb{R}$. We assume the map and the potential have a complex analytic…

Dynamical Systems · Mathematics 2012-05-28 Artur O. Lopes , Elismar R. Oliveira , Daniel Smania