JSC
2010
14 years 4 months ago
2010
Let Xm,n be the Segre-Veronese variety Pm ×Pn embedded by the morphism given by O(1, 2) and let σs(Xm,n) denote the sth secant variety to Xm,n. In this paper, we prove that if m ...
JSYML
2008
14 years 6 months ago
2008
The purpose of this note is to demonstrate that a weak form of club guessing on 1 implies the existence of an Aronszajn line with no Countryman suborders. An immediate consequence ...