Results 81 to 90 of about 31,583 (180)
Holomorphic equivariant cohomology
Mathematische Annalen, 1995 This paper introduces an equivariant cohomology group for holomorphic (non-compact) Lie group actions on complex manifolds and discusses its various properties. These include localization to fixed points which then implies many integration and residue formulas, especially a Duistermaat- Heckman type formula for non-compact Lie group action on Kähler ...
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The shift‐homological spectrum and parametrising kernels of rank functions
Journal of the London Mathematical Society, Volume 112, Issue 6, December 2025.Abstract For any compactly generated triangulated category, we introduce two topological spaces, the shift spectrum and the shift‐homological spectrum. We use them to parametrise a family of thick subcategories of the compact objects, which we call radical.
Isaac Bird +2 more
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Constant and Equivariant Cyclic Cohomology [PDF]
Letters in Mathematical Physics, 2006 In this note we prove that the constant and equivariant cyclic cohomology of algebras coincide. This shows that constant cyclic cohomology is rich and computable.
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Iitaka fibrations and integral points: A family of arbitrarily polarized spherical threefolds
Journal of the London Mathematical Society, Volume 112, Issue 6, December 2025.Abstract Studying Manin's program for a family of spherical log Fano threefolds, we determine the asymptotic number of integral points whose height associated with an arbitrary ample line bundle is bounded. This confirms a recent conjecture by Santens and sheds new light on the logarithmic analog of Iitaka fibrations, which have not yet been adequately
Ulrich Derenthal, Florian Wilsch
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Equivariant Brauer groups and cohomology
Journal of Algebra, 2006 Let \(\Gamma\) be a group, \(K\) a \(\Gamma\)-field, i.e., a field on which \(\Gamma\) acts by automorphisms, and \(H^2(\Gamma;K^*)\) the second cohomology group of \(\Gamma\) with coefficients in the multiplicative group \(K^*\) of \(K\) (viewed as a \(\Gamma\)-module).
Cegarra, A.M., Garzón, A.R.
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Boundary representations of locally compact hyperbolic groups
Proceedings of the London Mathematical Society, Volume 131, Issue 6, December 2025.Abstract We develop the theory of Patterson–Sullivan measures for locally compact hyperbolic groups. This theory associates to certain left‐invariant metrics on the group measures on its boundary. Next, we establish irreducibility of the resulting (unitary) Koopman representations for second countable, nonelementary, unimodular locally compact ...
Michael Glasner
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Localization of equivariant cohomology rings [PDF]
Transactions of the American Mathematical Society, 1984 The main result of this paper is the "calculation" of the Borel equivariant cohomology ring H ∗ ( E G × G X , Z / p
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GL‐algebras in positive characteristic II: The polynomial ring
Proceedings of the London Mathematical Society, Volume 131, Issue 6, December 2025.Abstract We study GL$\mathbf {GL}$‐equivariant modules over the infinite variable polynomial ring S=k[x1,x2,…,xn,…]$S = k[x_1, x_2, \ldots, x_n, \ldots]$ with k$k$ an infinite field of characteristic p>0$p > 0$. We extend many of Sam–Snowden's far‐reaching results from characteristic zero to this setting.
Karthik Ganapathy
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Real models for the framed little n$n$‐disks operads
Journal of Topology, Volume 18, Issue 4, December 2025.Abstract We study the action of the orthogonal group on the little n$n$‐disks operads. As an application we provide small models (over the reals) for the framed little n$n$‐disks operads. It follows in particular that the framed little n$n$‐disks operads are formal (over the reals) for n$n$ even and coformal for all n$n$.
Anton Khoroshkin, Thomas Willwacher
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Twisting and localization in supergravity: equivariant cohomology of BPS black holes
Journal of High Energy Physics, 2019 We develop the formalism of supersymmetric localization in supergravity using the deformed BRST algebra defined in the presence of a supersymmetric background as recently formulated in [1].
Imtak Jeon, Sameer Murthy
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