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pro vyhledávání: '"Haozhi Zeng"'
Regular semisimple Hessenberg varieties are smooth subvarieties of the flag variety, and their examples contain the flag variety itself and the permutohedral variety which is a toric variety. We give a complete classification of Fano and weak Fano re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::25b5392db12c0d34fb65bfc290aec842
http://arxiv.org/abs/2003.12286
http://arxiv.org/abs/2003.12286
Autor:
Haozhi Zeng
Publikováno v:
Algebr. Geom. Topol. 18, no. 5 (2018), 3031-3035
We calculate the fundamental group of locally standard [math] –manifolds under the assumption that the principal [math] –bundle obtained from the free [math] –orbits is trivial. This family of manifolds contains nonsingular toric varieties whic
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9040f0a4d3153685810f54d757f0f130
https://doi.org/10.2140/agt.2018.18.3031
https://doi.org/10.2140/agt.2018.18.3031
Publikováno v:
Chinese Annals of Mathematics, Series B. 38:1247-1268
The authors study torsion in the integral cohomology of a certain family of 2n-dimensional orbifolds X with actions of the n-dimensional compact torus. Compact simplicial toric varieties are in our family. For a prime number p, the authors find a nec
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https://explore.openaire.eu/search/publication?articleId=doi_________::68fb7c6df719d67aee71b5c136182988
https://doi.org/10.1007/s11401-017-1034-4
https://doi.org/10.1007/s11401-017-1034-4
Let $\mathfrak{g}$ be a complex semisimple Lie algebra. For a regular element $x$ in $\mathfrak{g}$ and a Hessenberg space $H\subseteq \mathfrak{g}$, we consider a regular Hessenberg variety $X(x,H)$ in the flag variety associated with $\mathfrak{g}$
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de48d6f199a88fc3c3d2540275ce7f6e
http://arxiv.org/abs/1712.09269
http://arxiv.org/abs/1712.09269
We construct quasitoric manifolds of dimension 6 and higher which are not equivariantly homeomorphic to any toric origami manifold. All necessary topological definitions and combinatorial constructions are given and the statement is reformulated in d
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::388cbd7c5d366c71437fc49258147b0f
http://arxiv.org/abs/1409.6855
http://arxiv.org/abs/1409.6855
A toric origami manifold is a generalization of a symplectic toric manifold (or a toric symplectic manifold). The origami symplectic form is allowed to degenerate in a good controllable way in contrast to the usual symplectic form. It is widely known
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