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Exterior power operations provide an additional structure on K-groups of schemes which lies at the heart of Grothendieck's Riemann-Roch theory. Over the past decades, various authors have constructed such operations on higher K-theory. In…

K-Theory and Homology · Mathematics 2025-01-09 Bernhard Köck , Ferdinando Zanchetta

We use Grayson's binary multicomplex presentation of algebraic $K$-theory to give a new construction of exterior power operations on the higher $K$-groups of a (quasi-compact) scheme. We show that these operations satisfy the axioms of a…

K-Theory and Homology · Mathematics 2017-06-14 Tom Harris , Bernhard Köck , Lenny Taelman

We prove a recursive formula for the exterior and symmetric powers of modules for a cyclic 2-group. This makes computation straightforward. Previously, a complete description was only known for cyclic groups of prime order.

Representation Theory · Mathematics 2015-10-09 Frank Himstedt , Peter Symonds

In this paper, first we obtain an explicit formula for an outer commutator multiplier of nilpotent products of cyclic groups with respect to the variety $[\mathfrak{N}_{c_1},\mathfrak{N}_{c_2}]$, $\mathfrak{N}_{c}M(\mathbb{Z}\st{n}*…

Group Theory · Mathematics 2012-02-14 Mohsen Parvizi , Behrooz Mashayekhy

Let $ \CO $ be the ring of integers of a non-Archimedean local field and $ \pi $ a fixed uniformizer of $ \CO $. We establish three main results. The first one states that the exterior powers of a $ \pi $-divisible $ \CO $-module scheme of…

Number Theory · Mathematics 2010-10-08 Mohammad Hadi Hedayatzadeh

We compute the exterior powers, with respect to the additive convolution on the general linear Lie algebra, of a parabolic Springer sheaf corresponding to a maximal parabolic subgroup of type (1, n -- 1). They turn out to be isomorphic to…

Representation Theory · Mathematics 2024-03-29 Roman Bezrukavnikov , Kostiantyn Tolmachov

The Witt ring of symmetric bilinear forms over a field has divided power operations. On the other hand, it follows from Garibaldi-Merkurjev-Serre's work on cohomological invariants that all operations on the Witt ring are essentially linear…

K-Theory and Homology · Mathematics 2023-09-11 Burt Totaro

We formulate the axioms of an orbifold theory with power operations. We define orbifold Tate K-theory, by adjusting Devoto's definition of the equivariant theory, and proceed to construct its power operations. We calculate the resulting…

K-Theory and Homology · Mathematics 2013-01-15 Nora Ganter

By applying the property of Ext-symmetry and the affine space structure of certain fibers, we introduce the notion of weighted quantum cluster functions and prove their multiplication formulas associated to abelian categories with…

Quantum Algebra · Mathematics 2023-12-14 Zhimin Chen , Jie Xiao , Fan Xu

We give a new algorithm for the construction of the unique superoptimal analytic approximant of a given continuous matrix-valued function on the unit circle, making use of exterior powers of operators in preference to spectral or {\em…

Functional Analysis · Mathematics 2021-08-06 Dimitrios Chiotis , Zinaida Lykova , Nicholas Young

Massive on-shell operator matrix elements and self-energy diagrams with outer gluon lines are calculated analytically at $O(\alpha_s^2)$, using Mellin-Barnes integrals and representations through generalized hypergeometric functions. This…

High Energy Physics - Phenomenology · Physics 2008-11-26 I. Bierenbaum , J. Blümlein , S. Klein

An action of a locally compact group or quantum group on a factor is said to be strictly outer when the relative commutant of the factor in the crossed product is trivial. We show that all locally compact quantum groups can act strictly…

Operator Algebras · Mathematics 2007-05-23 Stefaan Vaes

In this paper we consider symmetric powers representation and exterior powers representation of finite groups, which generated by the representation which has finite dimension over the complex field. We calculate the multiplicity of…

Representation Theory · Mathematics 2014-05-09 Tomoyuki Tamura

In 1960-62, E. K\"ahler developed what looks as a generalization of the exterior calculus, which he based on Clifford rather than exterior algebra. The role of\ the exterior derivative, $du$, was taken by the more comprehensive derivative…

General Physics · Physics 2019-01-28 Jose G. Vargas

A construction of integration, function calculus, and exterior calculus is made, allowing for integration of unital magma valued functions against (compactified) unital magma valued measures over arbitrary topological spaces. The Riemann…

Differential Geometry · Mathematics 2024-07-24 Petal B. Mokryn

We introduce the Schubert variety of a pair of linear subspaces in $\mathbf{C}^n$ and the external activity complex of a pair of not necessarily realizable matroids. Both of these generalize constructions of Ardila et al., which occur when…

Combinatorics · Mathematics 2025-03-26 Andrew Berget , Alex Fink

We define symmetric and exterior powers of categories, fitting into categorified Koszul complexes. We discuss examples and calculate the effect of these power operations on the categorical characters of matrix 2-representations.

Category Theory · Mathematics 2014-06-30 Nora Ganter , Mikhail Kapranov

We exhibit a way of "forcing a functional to be an effective operation" for arbitrary partial combinatory algebras (pcas). This gives a method of defining new pcas from old ones for some fixed functional, where the new partial functions can…

Logic · Mathematics 2014-08-22 Eric Faber , Jaap van Oosten

An action of a compact, in particular finite group on a C*-algebra is called properly outer if no automorphism of the group that is distinct from identity is implemented by a unitary element of the algebra of local multipliers of the…

Operator Algebras · Mathematics 2024-12-03 Costel Peligrad

We compute the Hochschild cohomology and homology of a class of quantum exterior algebras, with coefficients in twisted bimodules. As a result we obtain several interesting examples of the homological behavior of these algebras.

K-Theory and Homology · Mathematics 2007-08-30 Petter Andreas Bergh
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