Zobrazeno 1 - 10
of 206
pro vyhledávání: '"Duarte, Daniel P."'
Autor:
Duarte, Daniel, Snoussi, Jawad
We show that iterating Nash blowups resolve the singularities of normal toric surfaces satisfying the following property: the minimal generating set of the corresponding semigroup is contained in one or two segments. We also provide examples with an
Externí odkaz:
http://arxiv.org/abs/2410.15561
In this paper we show that iterating Nash blowups or normalized Nash blowups does not resolve the singularities of algebraic varieties of dimension four or higher over an algebraically closed field of arbitrary characteristic.
Externí odkaz:
http://arxiv.org/abs/2409.19767
We show that the Nash blowup of 2-generic determinantal varieties over fields of positive characteristic is non-singular. We prove this in two steps. Firstly, we explicitly describe the toric structure of such varieties. Secondly, we show that in thi
Externí odkaz:
http://arxiv.org/abs/2409.04688
We prove that the ideal generated by the maximal minors of the higher-order Jacobian matrix of a weighted homogeneous polynomial is also weighted homogeneous. As an application, we give a partial answer to a conjecture concerning the non-existence of
Externí odkaz:
http://arxiv.org/abs/2312.04677
We begin the study of Lipschitz saturation for germs of toric singularities. By looking at their associated analytic algebras, we prove that if (X,0) is a germ of toric singularity with smooth normalization then its Lipschitz saturation is again tori
Externí odkaz:
http://arxiv.org/abs/2310.03216
We investigate the relation between essential divisors and F-blowups, in particular, address the problem whether all essential divisors appear on the $e$-th F-blowup for large enough $e$. Focusing on the case of normal affine toric varieties, we esta
Externí odkaz:
http://arxiv.org/abs/2304.13247
We initiate the study of the resolution of singularities properties of Nash blowups over fields of prime characteristic. We prove that the iteration of normalized Nash blowups desingularizes normal toric surfaces. We also introduce a prime characteri
Externí odkaz:
http://arxiv.org/abs/2208.05599
We give an explicit set of generators for the semigroup of the Gr\"obner degeneration of a toric ideal. This set of generators is used to study algebraic properties of the semigroup it generates: approximation of semigroups, non-preservation of satur
Externí odkaz:
http://arxiv.org/abs/2201.04220
Autor:
Barajas, Paul, Duarte, Daniel
We prove that, for the jet scheme of a singular hypersurface, the blowup of a certain jet-related module is not an isomorphism. In conjunction with recent developments in the theory of Nash blowups, our result holds over fields of arbitrary character
Externí odkaz:
http://arxiv.org/abs/2107.08134
Autor:
Martins, Fernando F., Paiva, Teônis S., Duarte, Daniel G., Rodrigues, João H., Mól, Lucas A. S., Freitas, Jerome Borme Paulo P., de Araujo, Clodoaldo I. L.
In this letter we present emergent screening of magnetic monopole and dipole by the presence of 20nm aluminum cover layer. Our results were obtained in base of magnetic atomic force measurements, performed after external magnetic field steps applicat
Externí odkaz:
http://arxiv.org/abs/2011.05379