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We show that the Friedlander-Mazur conjecture holds for the product of an elliptic curve with some smooth projective variety of dimension 3. Moreover, we show that the Friedlander-Mazur conjecture is stable under a surjective map. As…

代数几何 · 数学 2021-11-05 Jin Cao , Wenchuan Hu

Three decades ago Cornalba-Harris proved a fundamental positivity result for divisor classes associated to families of stable curves. In this paper we establish an analogous positivity result for divisor classes associated to families of…

代数几何 · 数学 2018-04-02 Dawei Chen

We introduce some generalized topological concepts to deal with union-closed families, and show that one can reduce the proof of Frankl's conjecture to some families of so-called supratopological spaces. We prove some results on the…

组合数学 · 数学 2025-09-18 André Carvalho , António Machiavelo

We establish a finite-dimensional version of the Arveson-Stinespring dilation theorem for unital completely positive maps on operator systems. This result can be seen as a general principle to deduce finite-dimensional dilation theorems…

泛函分析 · 数学 2022-04-25 Michael Hartz , Martino Lupini

This paper investigates the Smith normal form equivalence problem for multivariate polynomial matrices. Using methods from matrix theory and polynomial ideal theory, we prove that Frost and Storey's 1978 conjecture holds for a broad class…

交换代数 · 数学 2026-05-12 Dong Lu , Yuanyuan Ruan , Dingkang Wang , Fanghui Xiao

In this paper, we show that some fundamental results for smooth mappings (e.g., the Brouwer degree formula, the implicit function and inverse function theorems, the mean value theorem, Sard's theorem, Hadamard's global invertibility…

泛函分析 · 数学 2021-05-26 Xuan Duc Ha Truong , Tien Son Pham

The aim of this paper is to prove a theorem of C.~Miranda on the H\"older regularity of convolution operators acting on the boundary of an open set in the limiting case in which the open set is of class $C^{1,1}$ and the densities are of…

偏微分方程分析 · 数学 2026-03-09 Matteo Dalla Riva , Massimo Lanza de Cristoforis , Paolo Musolino

The transformations of the sum identities for generalized harmonic and oscillatory numbers, obtained earlier in our recent report [1], enable us to derive the new identities expressed in terms of the corresponding square roots of x. At…

综合数学 · 数学 2008-02-14 R. M. Abrarov , S. M. Abrarov

We give a direct, purely arithmetical and elementary proof of the strong normalization of the cut-elimination procedure for full (i.e. in presence of all the usual connectives) classical natural deduction.

逻辑 · 数学 2009-05-07 René David , Karim Nour

We prove the Categorified Wrapping Number Conjecture for large classes of annular links, including alternating annular links and tangle closures exhibiting plumbed link phenomena. We do so by characterizing when a resolution is sufficient…

几何拓扑 · 数学 2025-01-07 Benjamin Daniels , Melissa Zhang

In 1976, Thurston proved that taut foliations on closed hyperbolic 3-manifolds have Euler class of norm at most one, and conjectured that conversely, any integral second cohomology class with norm equal to one is the Euler class of a taut…

几何拓扑 · 数学 2020-08-18 Mehdi Yazdi

We show that the subgroup lattice of any finite group satisfies Frankl's Union-Closed Conjecture. We show the same for all lattices with a modular coatom, a family which includes all supersolvable and dually semimodular lattices. A common…

组合数学 · 数学 2020-07-08 Alireza Abdollahi , Russ Woodroofe , Gjergji Zaimi

Using a new technique, we prove a rich family of special cases of the matroid intersection conjecture. Roughly, we prove the conjecture for pairs of tame matroids which have a common decomposition by 2-separations into finite parts.

组合数学 · 数学 2014-04-25 Nathan Bowler , Johannes Carmesin

In this paper, we use inductive methods similar to those employed in a 2025 paper by Alberts, Lemke Oliver, Wang and Wood in order to prove many new cases of the Twisted Malle's Conjecture. Previously, this conjecture had only been proven…

数论 · 数学 2025-09-23 Tanav Choudhary

We prove the convergence of normal form power series for suitably nonsingular analytic submanifolds under a broad class of infinite-dimensional Lie pseudo-group actions. Our theorem is illustrated by a number of examples, and includes, as a…

数学物理 · 物理学 2025-06-17 Peter J. Olver , Masoud Sabzevari , Francis Valiquette

A multivariate Gauss-Lucas theorem is proved, sharpening and generalizing previous results on this topic. The theorem is stated in terms of a seemingly new notion of convexity. Applications to multivariate stable polynomials are given.

复变函数 · 数学 2012-03-30 Marek Kanter

We verify that the descent maps provided by Langlands's Conjugacy Conjecture do satisfy the continuity condition necessary for them to be effective. Thus Langlands's conjecture does imply the existence of canonical models. This replaces an…

alg-geom · 数学 2021-01-19 J. S. Milne

We prove an inversion theorem for the Fourier transform defined for normal functions, in the case when such functions are of moderate decrease, and in dimensions 2 and 3. This improves on Carleson's general almost everywhere convergence…

数学物理 · 物理学 2024-04-01 Tristram de Piro

We show that the cyclotomic Iwasawa--Greenberg Main Conjecture holds for a large class of modular forms with multiplicative reduction at $p$, extending previous results for the good ordinary case. In fact, the multiplicative case is deduced…

数论 · 数学 2016-06-22 Christopher Skinner

In this article we show how Gr\"un's results in group theory can be used for studying the structure of class groups in normal extensions.

数论 · 数学 2011-08-30 Franz Lemmermeyer