Zobrazeno 1 - 10
of 147
pro vyhledávání: '"14B25"'
Autor:
Gramzow, Johann
This paper shows that for certain local topological properties, given a locally quasi-finite, flat and locally finitely presented map of schemes $f\colon X\to Y$, if $Y$ has the property, then so does $X$. We also show that being locally topologicall
Externí odkaz:
http://arxiv.org/abs/2411.08252
Autor:
Buczyński, Jarosław, Keneshlou, Hanieh
The $r$-th cactus variety of a subvariety $X$ in a projective space generalizes the $r$-th secant variety of $X$ and it is defined using linear spans of finite subschemes of $X$ of degree $r$. One of its original purposes was to study the vanishing s
Externí odkaz:
http://arxiv.org/abs/2410.21908
Autor:
Cutkosky, Steven Dale
Let $\mathcal I=\{I_n\}$ be a divisorial filtration on a two dimensional normal excellent local ring $(R,m_R)$. Let $R[\mathcal I]=\oplus_{n\ge 0}I_n$ be the Rees algebra of $\mathcal I$ and $\tau:\mbox{Proj}R[\mathcal I])\rightarrow \mbox{Spec}(R)$
Externí odkaz:
http://arxiv.org/abs/2410.22512
Autor:
Ishii, Shihoko
We study a pair consisting of a smooth variety over a field of positive characteristic and a multi-ideal with a real exponent. We prove the finiteness of the set of minimal log discrepancies for a fixed exponent if the dimension is less than or equal
Externí odkaz:
http://arxiv.org/abs/2410.15291
Autor:
Ishii, Shihoko, Yoshida, Ken-ichi
We show the vanishing of the first direct image of the structure sheaf of a normal scheme $X$ which is mapped properly and birationally over a regular scheme of any dimension. On the other hand, for any dimension greater than two, we show examples of
Externí odkaz:
http://arxiv.org/abs/2410.15282
Autor:
Tavanfar, Ehsan
We show that any complete local (normal) domain admits a module-finite quasi-Gorenstein normal (complete local) domain extension. Notably our result resolves the previously open case of residual characteristic two.
Comment: Comments are very wel
Comment: Comments are very wel
Externí odkaz:
http://arxiv.org/abs/2410.15149
Autor:
Rodríguez, Marta Pérez
Publikováno v:
Journal of Algebra 445 (2016), 78-102
Deformation theory is treated for locally notherian formal schemes (non necessarily smooth). The cotangent complex is defined in the derived category through the homology localization functor. The basic properties and results of a deformation theory
Externí odkaz:
http://arxiv.org/abs/2402.02879
Suppose that $(K,v_0)$ is a valued field, $f(x)\in K[x]$ is a monic and irreducible polynomial and $(L,v)$ is an extension of valued fields, where $L=K[x]/(f(x))$. Let $A$ be a local domain with quotient field $K$ dominated by the valuation ring of $
Externí odkaz:
http://arxiv.org/abs/2308.05656
We use techniques of Alper-Hall-Rydh to prove a local structure theorem for smooth morphisms between smooth stacks around points with linearly reductive stabilizers. This implies that the good moduli space of a smooth stack over a base has equisingul
Externí odkaz:
http://arxiv.org/abs/2307.00350
Autor:
Nitsure, Nitin
We give a short proof that any smooth (means formally smooth and finitely presented) homomorphism of rings can be obtained by base change from a smooth homomorphism of noetherian rings. Together with the elegant short proof by J. Conde-Lago that smoo
Externí odkaz:
http://arxiv.org/abs/2305.15409