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Related papers: A note on equivariant eta forms

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We give some results on quadratic normality of reducible curves canonically embedded and partially extend this study to their projective normality.

Algebraic Geometry · Mathematics 2010-09-27 Edoardo Ballico , Silvia Brannetti

We verify the Invariance Conjectures of tautological equations in genus two. In particular, a uniform derivation of all known genus two equations is given.

Algebraic Geometry · Mathematics 2007-05-23 D. Arcara , Y. -P. Lee

Given a set-theoretical solution of the pentagon equation $s:S\times S\to S\times S$ on a set $S$ and writing $s(a, b)=(a\cdot b,\, \theta_a(b))$, with $\cdot$ a binary operation on $S$ and $\theta_a$ a map from $S$ into itself, for every…

Group Theory · Mathematics 2024-03-26 Marzia Mazzotta , Vicent Pérez-Calabuig , Paola Stefanelli

In this article we classify normal forms and unfoldings of linear maps in eigenspaces of (anti)-automorphisms of order two. Our main motivation is provided by applications to linear systems of ordinary differential equations, general and…

Dynamical Systems · Mathematics 2007-05-23 I. Hoveijn , J. S. W. Lamb , R. M. Roberts

We establish abstract Adams isomorphisms in an arbitrary equivariantly presentable equivariantly semiadditive global category. This encompasses the well-known Adams isomorphism in equivariant stable homotopy theory, and applies more…

Algebraic Topology · Mathematics 2024-10-03 Bastiaan Cnossen , Tobias Lenz , Sil Linskens

We establish a necessary and sufficient condition for a representation of a lattice ordered semigroup to be regular, in the sense that certain extensions are completely positive definite. This result generalizes a theorem due to Brehmer…

Operator Algebras · Mathematics 2016-02-08 Boyu Li

It is shown that a natural notion of congruence permutability for quasivarieties already implies ``being a variety''. The result follows immediately from [3] and the sole aim of this note is to state it explicitly, together with a…

Logic · Mathematics 2025-12-11 Luca Carai , Miriam Kurtzhals , Tommaso Moraschini

We describe a method of computing equivariant and ordinary intersection cohomology of certain varieties with actions of algebraic tori, in terms of structure of the zero- and one-dimensional orbits. The class of varieties to which our…

Algebraic Geometry · Mathematics 2007-05-23 Tom Braden , Robert MacPherson

We prove the regularity conjecture, namely Eisenbud-Goto conjecture, for a normal surface with rational, Gorenstein elliptic and log canonical singularities. Along the way, we bound the regularity for a dimension zero scheme by its Loewy…

Algebraic Geometry · Mathematics 2015-08-11 Wenbo Niu

Etale groupoids arise naturally as models for leaf spaces of foliations, for orbifolds, and for orbit spaces of discrete group actions. In this paper we introduce a sheaf homology theory for etale groupoids. We prove its invariance under…

K-Theory and Homology · Mathematics 2007-05-23 Marius Crainic , Ieke Moerdijk

We generalize the Mittag-Leffler function by attaching an exponent to its Taylor coefficients. The main result is an asymptotic formula valid in sectors of the complex plane, which extends work by Le Roy [Bull. des sciences math. 24, 1900]…

Complex Variables · Mathematics 2011-03-14 Stefan Gerhold

Equational reasoning is central to quantum circuit optimisation and verification: one replaces subcircuits by provably equivalent ones using a fixed set of rewrite rules viewed as equations. A finite rule set is most informative when it…

Quantum Physics · Physics 2026-05-05 Colin Blake

We consider a renewal-like recursion and prove that the solution is polynomially decaying asymptotically under suitable conditions. We prove similar results for the corresponding integral equation. In both cases coefficients and functions…

Classical Analysis and ODEs · Mathematics 2012-05-22 Ágnes Backhausz , Tamás F. Móri

We prove that if two knots are concordant, their involutive knot Floer complexes satisfy a certain type of stable equivalence.

Geometric Topology · Mathematics 2017-08-23 Kristen Hendricks , Jennifer Hom

We study the eta invariants of Dirac operators and the regularized determinants of Dirac Laplacians over hyperbolic manifolds with cusps. We follow Werner M"uller and use relative traces to define these spectral invariants. We show the…

Differential Geometry · Mathematics 2007-05-23 Jinsung Park

We give a simple proof of a recent result by J. Schleischitz dealing with a counterexample to the uniform Littlewood conjecture. Our construction is based on simple properties of Fibonacci numbers.

Number Theory · Mathematics 2026-05-27 Nikolay Moshchevitin

Using geometric homology and cohomology we give a simple and conceptual proof of the Thom isomorphism theorem.

Algebraic Topology · Mathematics 2007-05-23 Martin Jakob

We establish an equivariant generalization of the Novikov inequalities which allow to estimate the topology of the set of critical points of a closed basic invariant form by means of twisted equivariant cohomology of the manifold. We apply…

dg-ga · Mathematics 2008-02-03 M. Braverman , M. Farber

We obtain all extreme and exposed points of the closed unit ball of the space of bilinear forms $T:\ell_{\infty}^{2}\times\ell_{\infty}^{2}\rightarrow \mathbb{R}.$ We also show that any (norm one) bilinear form $T:\ell_{\infty…

Functional Analysis · Mathematics 2016-08-04 Wasthenny Cavalcante , Daniel Pellegrino

We show that the natural stratifications arising from certain deformation families of line singularities with constant L\^e numbers satisfy Bekka's $(c)$-regularity condition. As a corollary, we obtain that these families are topologically…

Algebraic Geometry · Mathematics 2025-12-09 Christophe Eyral , Öznur Turhan