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Let $P$ and $Q$ be two orthogonal projections on a separable Hilbert space, $\calH$. Wang, Du and Dou proved that there exists a unitary, $U$, with $UPU^{-1} =Q, \quad UQU^{-1} = P$ if and only if $\dim(\ker P \cap \ker(1-Q)) = \dim(\ker Q…

Functional Analysis · Mathematics 2017-03-28 Barry Simon

We show that the locally free sheaf of locally exact differentials on a smooth projective curve of genus at least two over an algebraically closed field k of characteristic p is a stable vector bundle. This answers a question of Raynaud.

Algebraic Geometry · Mathematics 2013-06-14 Kirti Joshi

This paper extends the results of "Operads and Algebraic Homotopy" in giving algebraic invariants for the stable homotopy type of a pointed simply-connected simplicial set.

Algebraic Topology · Mathematics 2007-05-23 Justin R. Smith

We prove that if a continuous piecewise-smooth map on $\mathbb{R}^n$ is comprised of two linear functions, has a bounded orbit, and satisfies a certain non-degeneracy condition, then it has a fixed point. The result has important…

Dynamical Systems · Mathematics 2024-12-17 David J. W. Simpson

In the theory of the moduli-stacks of n-pointed stable curves, there are two fundamental functors, contraction and stabilization. These functors are constructed in [4], where they are used to show that the various \bar{M_{g,n}}'s are…

Algebraic Geometry · Mathematics 2016-11-25 Finn F. Knudsen

We prove that $p$-adic geometric pro-\'etale cohomology of smooth partially proper rigid analytic varieties over $p$-adic fields seen in the category of Topological Vector Spaces satisfies a Poincar\'e duality as we have conjectured. This…

Algebraic Geometry · Mathematics 2025-10-08 Pierre Colmez , Sally Gilles , Wiesława Nizioł

We prove autoduality for curves of compact type and, more generally, treelike curves with planar singularities. More precisely, we produce an isomorphism between the generalized Jacobian of such a curve and the connected component of the…

Algebraic Geometry · Mathematics 2012-08-08 Eduardo Esteves , Flávio Rocha

Our goal is twofold. On one hand we show that the cones of divisors ample in codimension $k$ on a Mori dream space are rational polyhedral. On the other hand we study the duality between such cones and the cones of $k$-moving curves by…

Algebraic Geometry · Mathematics 2025-08-05 Maria Chiara Brambilla , Olivia Dumitrescu , Elisa Postinghel , Luis José Santana Sánchez

We classify pro-$p$ Poincar\'e duality pairs in dimension two. We then use this classification to build a pro-$p$ analogue of the curve complex and establish its basic properties. We conclude with some statements concerning separability…

Group Theory · Mathematics 2018-06-21 Gareth Wilkes

Little seems to be known about the invariant manifolds for stochastic partial differential equations (SPDEs) driven by nonlinear multiplicative noise. Here we contribute to this aspect and analyze the Lu-Schmalfu{\ss} conjecture…

Probability · Mathematics 2023-10-30 Xiaofang Lin , Alexandra Neamtu , Caibin Zeng

We prove that there exists a supersingular nonsingular curve of genus $4$ in arbitrary characteristic $p$. For $p>3$ we shall prove that the desingularization of a certain fiber product over $\mathbb{P}^1$ of two supersingular elliptic…

Algebraic Geometry · Mathematics 2021-10-04 Momonari Kudo , Shushi Harashita , Hayato Senda

We present a geometric realization of the duality between skeleta in $T^*\mathbb P^n$ and collars of local surfaces. Such duality is predicted by combining two auxiliary types of duality: on one side, symplectic duality between $T^*\mathbb…

Symplectic Geometry · Mathematics 2024-01-09 Edoardo Ballico , Elizabeth Gasparim , Francisco Rubilar , Bruno Suzuki

We improve the geometric properties of SLE$(\kappa;\vec{\rho})$ processes derived in an earlier paper, which are then used to obtain more results about the duality of SLE. We find that for $\kappa\in (4,8)$, the boundary of a standard…

Probability · Mathematics 2008-03-23 Dapeng Zhan

We exhibit planar, rational curves of large degree over ${\mathbb F}_2$ that have a unique singular point, which has multiplicity 2. In characteristic 0 such curves exist only for degrees up to $6$. v.2: references updated and examples of…

Algebraic Geometry · Mathematics 2026-04-21 János Kollár

S. Boucksom, J.-P. Demailly, M. Paun and Th. Peternell proved that the cone of mobile curves ME(X) of a projective complex manifold X is dual to the cone generated by classes of effective divisors and conjectured an extension of this…

Algebraic Geometry · Mathematics 2009-08-06 Matei Toma

The equivalence between dg duality and Verdier duality has been established for cyclic operads earlier. We propose a generalization of this correspondence from cyclic operads and dg duality to twisted modular operads and Feynman transform.…

Quantum Algebra · Mathematics 2021-07-19 Hao Yu

In this thesis, we generalize the Koszul duality for associative algebras and operads to PROPs. The operads are algebraic objects that represent the operations with multiple inputs but only one output acting on a certain type of algebras. A…

Quantum Algebra · Mathematics 2007-05-23 Bruno Vallette

We develop an algebraic formalism for topological $\mathbb{T}$-duality. More precisely, we show that topological $\mathbb{T}$-duality actually induces an isomorphism between noncommutative motives that in turn implements the well-known…

K-Theory and Homology · Mathematics 2015-05-15 Snigdhayan Mahanta

Given two closed curves in a surface, we propose an algorithm to detect whether they are of the same type or not.

Geometric Topology · Mathematics 2020-12-18 Juan Souto , Thi Hanh Vo

For fixed positive integer $n$, $p\in[0,1]$, $a\in(0,1)$, we prove that if a function $g:\mathbb{S}^{n-1}\to \mathbb{R}$ is sufficiently close to 1, in the $C^a$ sense, then there exists a unique convex body $K$ whose $L_p$ curvature…

Functional Analysis · Mathematics 2024-05-07 Károly J. Böröczky , Christos Saroglou
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