Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Andrzej Weber"'
Autor:
Andrzej Weber, Richárd Rimányi
Publikováno v:
Communications in Contemporary Mathematics. 24
Characteristic classes of Schubert varieties can be used to study the geometry and the combinatorics of homogeneous spaces. We prove a relation between elliptic classes of Schubert varieties on a generalized full flag variety and those on its Langlan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4974b8ee452d23b48e701e0d0c98013c
https://doi.org/10.1142/s0219199721500140
https://doi.org/10.1142/s0219199721500140
Autor:
Andrzej Weber, Jakub Koncki
We present a definition of {\em twisted motivic Chern classes} for singular pairs $(X,\Delta)$ consisting of a singular space $X$ and a $\mathbb Q$-Cartier divisor containing the singularities of $X$. The definition is a mixture of the construction o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42381dae29bf63c47c64cfa179ff6a5f
http://arxiv.org/abs/2101.12515
http://arxiv.org/abs/2101.12515
Autor:
Rick J. Schulting, Kristiina Mannermaa, Pavel E. Tarasov, Thomas Higham, Christopher Bronk Ramsey, Valeri Khartanovich, Vyacheslav Moiseyev, Dmitriy Gerasimov, John O’Shea, Andrzej Weber
Publikováno v:
Nature Ecology & Evolution
Yuzhniy Oleniy Ostrov in Karelia, northwest Russia, is one of the largest Early Holocene cemeteries in northern Eurasia, with 177 burials recovered in excavations in the 1930s; originally, more than 400 graves may have been present. A new radiocarbon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7425ec3732f270b092df3d9995b39c4a
Autor:
Piotr Rudnicki, Andrzej Weber
Anna Melnikov provided a parametrization of Borel orbits in the affine variety of square-zero $n \times n$ matrices by the set of involutions in the symmetric group. A related combinatorics leads to a construction a Bott-Samelson type resolution of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14cb28c59dd5292d409901194334826b
Publikováno v:
Springer Proceedings in Mathematics & Statistics ISBN: 9789811574504
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 c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70b865750149b17b6450b9d47126d230
https://doi.org/10.1007/978-981-15-7451-1_9
https://doi.org/10.1007/978-981-15-7451-1_9
Autor:
Magdalena Zielenkiewicz, Andrzej Weber
Publikováno v:
Journal of Algebraic Combinatorics. 49:361-380
We study residue formulas for push-forward in the equivariant K-theory of homogeneous spaces. For the classical Grassmannian, the residue formula can be obtained from the cohomological formula by a substitution. We also give another proof using sympl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e17622bee34c9f0b7ea74746ec58ae9
https://doi.org/10.1007/s10801-018-0827-1
https://doi.org/10.1007/s10801-018-0827-1
Autor:
Krzysztof Ziemiański, Andrzej Weber
Publikováno v:
Fundamenta Mathematicae. 240:137-159
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b33cc316dd9ac50efd1033cb9d315578
https://doi.org/10.4064/fm304-2-2017
https://doi.org/10.4064/fm304-2-2017
Autor:
Andrzej Weber, Maria Donten-Bury
Publikováno v:
Transformation Groups. 23:671-705
We study properties of the Hirzebruch class of quotient singularities $\mathbb{C}^n/G$, where $G$ is a finite matrix group. The main result states that the Hirzebruch class coincides with the Molien series of $G$ under suitable substitution of variab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3bfbbfc36f92929abac2a2119e335069
https://doi.org/10.1007/s00031-017-9452-7
https://doi.org/10.1007/s00031-017-9452-7
Autor:
Jarosław A. Wiśniewski, Andrzej Weber
Publikováno v:
International Mathematics Research Notices. 2018:2967-2979
We prove that the variety of complete flags for any semisimple algebraic group is rigid in any smooth family of Fano manifolds.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5e615362fdfa8cc0cd139519553a5c8
https://doi.org/10.1093/imrn/rnw334
https://doi.org/10.1093/imrn/rnw334
We introduce new notions in elliptic Schubert calculus: the (twisted) Borisov-Libgober classes of Schubert varieties in general homogeneous spaces G/P. While these classes do not depend on any choice, they depend on a set of new variables. For the de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60c3817f24d5c741e94f67c050366923
http://arxiv.org/abs/1910.02313
http://arxiv.org/abs/1910.02313