Zobrazeno 1 - 10
of 474
pro vyhledávání: '"László, M."'
Autor:
Fehér, László M., Juhász, András P.
We give a new method to calculate the universal cohomology classes of coincident root loci. We show a polynomial behavior of them and apply this result to prove that generalized Pl\"ucker formulas are polynomials in the degree, just as the classical
Externí odkaz:
http://arxiv.org/abs/2312.06430
Autor:
Fehér, László M., Matszangosz, Ákos K.
Publikováno v:
Algebr. Geom. Topol. 22 (2022) 433-472
We develop the theory of halving spaces to obtain lower bounds in real enumerative geometry. Halving spaces are topological spaces with an action of a Lie group $\Gamma$ with additional cohomological properties. For $\Gamma=\mathbb{Z}_2$ we recover t
Externí odkaz:
http://arxiv.org/abs/2006.11251
Autor:
Fehér, László M.
We study motivic Chern classes of cones. First we show examples of projective cones of smooth curves such that their various $K$-classes (sheaf theoretic, push-forward and motivic) are all different. Then we show connections between the torus equivar
Externí odkaz:
http://arxiv.org/abs/2005.13276
Akademický článek
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Publikováno v:
In Journal of Combinatorial Theory, Series B January 2023 158 Part 1:117-145
Consider a complex algebraic group $G$ acting on a smooth variety $M$ with finitely many orbits, and let $\Omega$ be an orbit. The following three invariants of $\Omega\subset M$ can be characterized axiomatically: (1) the equivariant fundamental cla
Externí odkaz:
http://arxiv.org/abs/1811.11467
We study a K-theoretic characteristic class of singular varieties, namely the equivariant motivic Chern class. We prove that the motivic Chern class is characterized by an axiom system inspired by that of "K-theoretic stable envelopes," recently defi
Externí odkaz:
http://arxiv.org/abs/1802.01503
Autor:
Fehér, László M., Nagy, János
We introduce a geometric method to study additive combinatorial problems. Using equivariant cohomology we reprove the Dias da Silva-Hamidoune theorem. We improve a result of Sun on the linear extension of the Erd\H{o}s-Heilbronn conjecture. We genera
Externí odkaz:
http://arxiv.org/abs/1610.02539
Publikováno v:
In Research in Veterinary Science October 2020 132:338-341
Autor:
Fehér, László M., Matszangosz, Ákos K.
We study a 2-parameter family of enumerative problems over the reals. Over the complex field, these problems can be solved by Schubert calculus. In the real case the number of solutions can be different on the distinct connected components of the con
Externí odkaz:
http://arxiv.org/abs/1401.4638