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In this paper, we develop a new index theory for manifolds with polyhedral boundary. As an application, we prove Gromov's dihedral extremality conjecture regarding comparisons of scalar curvatures, mean curvatures and dihedral angles…

Differential Geometry · Mathematics 2023-03-09 Jinmin Wang , Zhizhang Xie , Guoliang Yu

The main conjectures of Iwasawa theory provide the only general method known at present for studying the mysterious relationship between purely arithmetic problems and the special values of complex L-functions, typified by the conjecture of…

Number Theory · Mathematics 2010-06-29 J. Coates , T. Fukaya , K. Kato , R. Sujatha , O. Venjakob

Generalizing our ideas in [arXiv:1006.3313], we explain how topologically-twisted N=2 gauge theory on a four-manifold with boundary, will allow us to furnish purely physical proofs of (i) the Atiyah-Floer conjecture, (ii) Munoz's theorem…

High Energy Physics - Theory · Physics 2022-09-20 Meer Ashwinkumar , Kee-Seng Png , Meng-Chwan Tan

For a normal covering over a closed oriented topological manifold we give a proof of the L2-signature theorem with twisted coefficients, using Lipschitz structures and the Lipschitz signature operator introduced by Teleman. We also prove…

Geometric Topology · Mathematics 2018-11-28 Wolfgang Lueck , Thomas Schick

In this paper, we describe recent work towards the mirror P=W conjecture, which relates the weight filtration on a cohomology of a log Calabi--Yau manifold to the perverse Leray filtration on the cohomology of the homological mirror dual…

Algebraic Geometry · Mathematics 2020-08-13 Andrew Harder , Ludmil Katzarkov , Victor Przyjalkowski

In this paper we prove the equivalence of two conjectures on linear systems through fat points on a generic K3 surface. The first conjecture is exactly as Segre conjecture on the projective plane. Whereas the second characterizes such…

Algebraic Geometry · Mathematics 2007-05-23 Cindy De Volder , Antonio Laface

We formulate a number of related generalisations of the weight part of Serre's conjecture to the case of GL(n) over an arbitrary number field, motivated by the formalism of the Breuil-M\'ezard conjecture. We give evidence for these…

Number Theory · Mathematics 2021-03-29 Toby Gee , Florian Herzig , David Savitt

We establish the second part of Milnor's conjecture on the volume of simplexes in hyperbolic and spherical spaces. A characterization of the closure of the space of the angle Gram matrices of simplexes is also obtained.

Geometric Topology · Mathematics 2007-08-28 Ren Guo , Feng Luo

The Hahn-Banach theorem states that onto each line in every normed space, there is a unitary projection, and Kadec and Snobar proved (using John's ellipsoid) that onto each $n$-dimensional subspace of any real normed space, there is a…

Metric Geometry · Mathematics 2017-03-06 David Hermann

Eisenbud and Harris conjectured in 1982 that an algebraic curve of high genus lies on a surface of low degree (which they proved for curves of very large degree). They observed constraints on the Hilbert function of a general hyperplane…

Algebraic Geometry · Mathematics 2016-04-21 Juergen Rathmann

Estimating the probability that the Erd\H{o}s-R\'enyi random graph $G(n,m)$ is $H$-free, for a fixed graph $H$, is one of the fundamental problems in random graph theory. If $m$ is such that each edge of $G(n,m)$ belongs to a copy of $H'$…

Combinatorics · Mathematics 2021-08-13 Rajko Nenadov

The goal of this paper is to prove the full geometric Bogomolov conjecture. We first reduce it to the case that the extension of the base fields has transcendence degree 1, and then we prove the later case by intersection theory in…

Algebraic Geometry · Mathematics 2022-07-20 Junyi Xie , Xinyi Yuan

In this paper, we introduce a notion of stable coarse algebras for metric spaces with bounded geometry, and formulate the twisted coarse Baum--Connes conjecture with respect to stable coarse algebras. We prove permanence properties of this…

Operator Algebras · Mathematics 2026-05-05 Jintao Deng , Ryo Toyota

We resolve a conjecture of Kalai relating approximation theory of convex bodies by simplicial polytopes to the face numbers and primitive Betti numbers of these polytopes and their toric varieties. The proof uses higher notions of…

Metric Geometry · Mathematics 2016-02-18 Karim Adiprasito , Eran Nevo , José Alejandro Samper

The goal is to verify the Hodge conjecture (and some related conjectures) for certain moduli spaces. It is shown that the (generalized) Hodge conjecture holds for the projective moduli spaces of vector bundles over an abelian or K3 surface…

Algebraic Geometry · Mathematics 2007-05-23 Donu Arapura

In this paper we develop a strategy and some technical tools for proving the Andre-Oort conjecture. We give lower bounds for the degrees of Galois orbits of geometric components of special subvarieties of Shimura varieties, assuming the…

Number Theory · Mathematics 2013-09-12 Emmanuel Ullmo , Andrei Yafaev

We investigate the combinatorial structure of subspaces of the exterior algebra of a finite-dimensional real vector space, working in parallel with the extremal combinatorics of hypergraphs. Using initial monomials, projections of the…

Combinatorics · Mathematics 2021-11-22 Alex Scott , Elizabeth Wilmer

Let $f$ be a primitive form with respect to $SL_2(Z)$. Then we propose a conjecture on the congruence between the Klingen-Eisenstein lift of the Duke-Imamoglu-Ikeda lift of $f$ and a certain lift of a vector valued Hecke eigenform with…

Number Theory · Mathematics 2022-04-28 Hiraku Atobe , Masataka Chida , Tomoyoshi Ibukiyama , Hidenori Katsurada , Takuya Yamauchi

We prove a sharp upper bound on the $L^2$-norm of Hecke eigenforms restricted to a horocycle, as the weight tends to infinity.

Number Theory · Mathematics 2017-05-08 Ho Chung Siu , Kannan Soundararajan

In 1982-83, E. Nochka proved a conjecture of Cartan on defects of holomorphic curves in $\Bbb P^n$ relative to a possibly degenerate set of hyperplanes. This was further explained by W. Chen in his 1987 thesis, and subseqently simplified by…

Number Theory · Mathematics 2008-02-08 Paul Vojta