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pro vyhledávání: '"Lopes, Margarida Mendes"'
Let X be a non singular projective surface. Given a semistable non isotrivial fibration f over a smooth rational curve with general fiber non hyperelliptic of genus g bigger than 3, we show that if the number s of singular fibers is 5, then the genus
Externí odkaz:
http://arxiv.org/abs/2312.08126
Publikováno v:
Math. Nach. Volume 296, Issue 10, October 2023, Pages 4739-4744
Kawamata has shown that the quasi-Albanese map of a quasi-projective variety with log-irregularity equal to the dimension and log-Kodaira dimension 0 is birational. In this note we show that under these hypotheses the quasi-Albanese map is proper in
Externí odkaz:
http://arxiv.org/abs/2210.11776
Publikováno v:
Forum of Mathematics, Sigma, 2023, 11 E7
Let V be a smooth quasi-projective complex surface such that the three first logarithmic plurigenera are equal to 1 and the logarithmic irregularity is equal to 2. We prove that the quasi-Albanese morphism of V is birational and there exists a finite
Externí odkaz:
http://arxiv.org/abs/2206.05464
We make a very detailed analysis of the numerical properties of effective divisors whose support is contained in the exceptional locus of a birational morphism of smooth projective surfaces. As an application we extend Miyaoka's inequality on the num
Externí odkaz:
http://arxiv.org/abs/2204.10797
Autor:
Lopes, Margarida Mendes, Pardini, Rita
Let X be a minimal complex surface of general type such that its image via the canonical map is a surface; we denote by d the degree of the canonical map. In this expository work, first of all we recall the known possibilities for the canonical image
Externí odkaz:
http://arxiv.org/abs/2103.01912
In this work we describe a construction of semistable fibrations over an elliptic curve with one unique singular fibre and we give effective examples using monodromy of curves.
Comment: 7 pages. This version contains a corrected version of examp
Comment: 7 pages. This version contains a corrected version of examp
Externí odkaz:
http://arxiv.org/abs/1707.08671
Publikováno v:
Mathematische Nachrichten; Nov2024, Vol. 297 Issue 11, p4356-4359, 4p
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Autor:
Lopes, Margarida Mendes, Pardini, Rita
We give an explicit description of the Godeaux surfaces that admit an involution such that the quotient surface is birational to an Enriques surface; these surfaces give a 6-dimensional unirational irreducible subset of the moduli space of surfaces o
Externí odkaz:
http://arxiv.org/abs/1502.04621