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Associated to any manifold equipped with a closed form of degree >1 is an `L-infinity algebra of observables' which acts as a higher/homotopy analog of the Poisson algebra of functions on a symplectic manifold. In order to study Lie group…

Differential Geometry · Mathematics 2016-08-17 Martin Callies , Yael Fregier , Christopher L. Rogers , Marco Zambon

In this paper we study the set of projective maps between compact proper convex real projective manifolds. We show that this set contains only finitely many distinct homotopy classes and each homotopy class has the structure of a real…

Differential Geometry · Mathematics 2015-07-01 Andrew Zimmer

This dissertation comprises three collections of results, all united by a common theme. The theme is the study of categories via algebraic techniques, considering categories themselves as algebraic objects. This algebraic approach to…

Algebraic Geometry · Mathematics 2018-05-29 John D. Berman

Described the algebraic structure on the space of homotopy classes of cycles with marked topological flags of disks. This space is a non-commutative monoid, with an Abelian quotient corresponding to the group of singular homologies…

Algebraic Topology · Mathematics 2007-05-23 Valery Dolotin

In this article, we give a construction of the (un-)stable motivic homotopy category of an algebraic stack in the spirit of Morel-Voevodsky. We prove that this new construction agrees with the stable motivic homotopy category defined by…

Algebraic Geometry · Mathematics 2025-11-04 Neeraj Deshmukh , Felix Sefzig

We show that any adjoint absolutely simple linear algebraic group over a field of characteristic zero is the automorphism group of some projector on a central simple algebra. Projective homogeneous varieties can be described in these terms;…

Group Theory · Mathematics 2020-04-20 Viktor Petrov , Andrei Semenov

In previous work we introduced the notion of binomial cup-one algebras, which are differential graded algebras endowed with Steenrod $\cup_1$-products and compatible binomial operations. In this paper we show that binomial cup-one algebras…

Algebraic Topology · Mathematics 2026-01-21 Richard D. Porter , Alexander I. Suciu

We adapt the notion of an algebraic theory to work in the setting of quasicategories developed recently by Joyal and Lurie. We develop the general theory at some length. We study one extended example in detail: the theory of commutative…

Algebraic Topology · Mathematics 2011-09-09 James Cranch

The complex projective structures considered is this article are compact curves locally modeled on $\mathbb{CP}^1$. To such a geometric object, modulo marked isomorphism, the monodromy map associates an algebraic one: a representation of…

Differential Geometry · Mathematics 2025-08-28 Titouan Sérandour

We compare the log motivic stable homotopy category and the usual motivic stable homotopy category over a perfect field admitting resolution of singularities. As a consequence, we show that the log motivic stable homotopy groups are…

Algebraic Geometry · Mathematics 2025-02-14 Doosung Park

We introduce the class of rational plane curves parameterizable by conics as an extension of the family of curves parameterizable by lines (also known as monoid curves). We show that they are the image of monoid curves via suitable…

Algebraic Geometry · Mathematics 2012-10-04 Teresa Cortadellas Benitez , Carlos D'Andrea

We construct a perfect version of Morel--Voevodsky's motivic homotopy category over a perfect base scheme in positive characteristic. By checking the axioms of a coefficient system, we establish a six-functor formalism. We show that…

Algebraic Geometry · Mathematics 2025-10-03 Christian Dahlhausen , Jeroen Hekking , Storm Wolters

Fix a base field F, a finite field K and consider a sequence of central simple F-algebras A_1,...,A_n. In this note we provide some results toward a classification of the indecomposable motives lying in the motivic decompositions of…

Algebraic Geometry · Mathematics 2011-12-22 Charles De Clercq

Let M be a homogeneous space admitting a left translation by a connected Lie group G. The adjoint to the action gives rise to a map from G to the monoid of self-homotopy equivalences of M.The purpose of this paper is to investigate the…

Algebraic Topology · Mathematics 2010-07-27 Katsuhiko Kuribayashi

Answering a problem raised by Lazarsfeld, Hwang and Mok proved that a surjective holomorphic map from a rational homogeneous space of Picard number 1 onto projective manifold different from projective space must be a biholomorphism. THe aim…

Algebraic Geometry · Mathematics 2008-01-21 Chihin Lau

Two semisimple algebraic groups of the same type are said to be motivic equivalent if the motives of the associated projective homogeneous varieties of the same type are isomorphic. We give general criteria of motivic equivalence in terms…

Algebraic Geometry · Mathematics 2013-04-02 Charles De Clercq

We compute the homotopy groups at each unital abelian C*-algebra $C(T)$ in the Morita $3$-category of abelian C*-algebras, C*-algebras with central maps, C*-correspondences, and adjointable bimodule maps. We describe these groups in terms…

Operator Algebras · Mathematics 2026-04-01 Gregory Faurot , Giovanni Ferrer

In this paper we use the technique of Hopf algebras and quasi-symmetric functions to study the combinatorial polytopes. Consider the free abelian group $\mathcal{P}$ generated by all combinatorial polytopes. There are two natural bilinear…

Combinatorics · Mathematics 2015-05-20 Victor M. Buchstaber , Nickolai Erokhovets

Algebraic cycles on complex projective space P(V) are known to have beautiful and surprising properties. Therefore, when V carries a real or quaternionic structure, it is natural to ask for the properties of the groups of real or…

Algebraic Topology · Mathematics 2012-08-27 H. Blaine Lawson, , Paulo Lima-Filho , Marie-Louise Michelsohn

Polynomials in a category have been studied as a generalization of the traditional notion in mathematics. Their construction has recently been extended to higher groupoids, as formalized in homotopy type theory, by Finster, Mimram, Lucas…

Category Theory · Mathematics 2024-12-18 Elies Harington , Samuel Mimram