Results 31 to 40 of about 11,355 (303)

On certain isogenies between K3 surfaces [PDF]

open access: yes, 2020
We will prove that there are infinitely many families of K3 surfaces which both admit a finite symplectic automorphism and are (desingularizations of) quotients of other K3 surfaces by a symplectic automorphism.
Garbagnati, A.   +3 more
core   +1 more source

Zariski K3 surfaces

open access: yesRevista Matemática Iberoamericana, 2019
We construct Zariski K3 surfaces of Artin invariant 1, 2 and 3 in many characteristics. In particular, we prove that any supersingular Kummer surface is Zariski if p\not\equiv 1 mod 12.
Katsura, Toshiyuki, Schütt, Matthias
openaire   +3 more sources

Rational curves on K3 surfaces [PDF]

open access: yesInventiones mathematicae, 2011
12 pages, 1 figure, introduction rewritten and a figure ...
Li, Jun, Liedtke, Christian
openaire   +3 more sources

On Cox rings of K3 surfaces [PDF]

open access: yesCompositio Mathematica, 2010
Abstract We study Cox rings of K3 surfaces. A first result is that a K3 surface has a finitely generated Cox ring if and only if its effective cone is rational polyhedral. Moreover, we investigate degrees of generators and relations for Cox rings of K3 surfaces of Picard number two, and explicitly compute the Cox rings of generic K3 ...
Artebani, Michela   +2 more
openaire   +6 more sources

THE KATZ–KLEMM–VAFA CONJECTURE FOR $K3$ SURFACES

open access: yesForum of Mathematics, Pi, 2016
We prove the KKV conjecture expressing Gromov–Witten invariants of $K3$ surfaces in terms of modular forms.
R. PANDHARIPANDE, R. P. THOMAS
doaj   +1 more source

Evaluation of surface characteristics of new rotary nickel-titanium instruments: SEM-EDS analysis [PDF]

open access: yesStomatološki glasnik Srbije, 2021
Introduction Modern endodontic procedure implies the use of rotary Ni-Ti instruments during chemomechanical treatment of root canals. The aim of this study is to analyze the surfaces of new (unused) rotary endodontic instruments using the SEM-EDS method ...
Jovanović-Medojević Milica   +3 more
doaj   +1 more source

On noncommutative orbifolds of K3 surfaces [PDF]

open access: yesJournal of Mathematical Physics, 2003
Using the algebraic geometry method of Berenstein and Leigh for the construction of the toroidal orbifold (T2×T2×T2)/(Z2×Z2) with discrete torsion and considering local K3 surfaces, we present noncommutative aspects of the orbifolds of product of K3 surfaces.
Belhaj, A., Manjarín, J. J., Resco, P.
openaire   +2 more sources

On a stratification of the moduli of K3 surfaces

open access: yesJournal of the European Mathematical Society, 2000
In this paper we give a characterization of the height of K3 surfaces in characteristic p>0 . This enables us to calculate the cycle classes in families of K3 surfaces of the loci where the height is at least
van der Geer, G.B.M., Katsura, T.
openaire   +5 more sources

Ordinary K3 surfaces over a finite field [PDF]

open access: yes, 2020
We give a description of the category of ordinary K3 surfaces over a finite field in terms of linear algebra data over Z. This gives an analogue for K3 surfaces of Deligne's description of the category of ordinary abelian varieties over a finite field ...
Taelman, Lenny
core   +1 more source

The geometry and moduli of K3 surfaces [PDF]

open access: yes, 2015
These notes will give an introduction to the theory of K3 surfaces. We begin with some general results on K3 surfaces, including the construction of their moduli space and some of its properties.
Alan Thompson (5686433)   +1 more
core   +2 more sources

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