scholarly journals Analysis of double covers of factor graphs

2016 ◽  
Author(s):  
Pascal O. Vontobel
Keyword(s):  
Factor Graphs ◽  
Double Covers

Double cover K3 surfaces of Hirzebruch surfaces

2021 ◽  
Vol 21 (2) ◽  
pp. 221-225
Author(s):  
Taro Hayashi
Keyword(s):  
Rational Surface ◽  
K3 Surfaces ◽  
Double Cover ◽  
Double Covering ◽  
Smooth Surfaces ◽  
Branch Locus ◽  
Hirzebruch Surfaces ◽  
Double Covers

Abstract General K3 surfaces obtained as double covers of the n-th Hirzebruch surfaces with n = 0, 1, 4 are not double covers of other smooth surfaces. We give a criterion for such a K3 surface to be a double covering of another smooth rational surface based on the branch locus of double covers and fibre spaces of Hirzebruch surfaces.

scholarly journals Varieties of minimal rational tangents on double covers of projective space

2012 ◽  
Vol 275 (1-2) ◽  
pp. 109-125 ◽  
Author(s):  
Jun-Muk Hwang ◽  
Hosung Kim
Keyword(s):  
Projective Space ◽  
Double Covers

scholarly journals An Introduction to factor graphs

2004 ◽  
Vol 21 (1) ◽  
pp. 28-41 ◽  
Author(s):  
H. Loeliger
Keyword(s):  
Factor Graphs

Orthogonal double covers by super-extendable cycles

2002 ◽  
Vol 10 (5) ◽  
pp. 283-293 ◽  
Author(s):  
Christian Bey ◽  
Sven Hartmann ◽  
Uwe Leck ◽  
Volker Leck
Keyword(s):  
Double Covers
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