Documents Borel Sets With Large Squeare

FUNDAMENTA MATHEMATICAE 159 (1999) Borel sets with large squares by Saharon S h e l a h (Jerusalem and New Brunswick, N.J.) Abstract. For a cardinal µ we give a sufficient…

Documents MAT 360 Lecture 10 Hyperbolic Geometry. What is the negation of Hilbert’s Axiom? There exists a...

Slide 1 MAT 360 Lecture 10 Hyperbolic Geometry Slide 2 What is the negation of Hilbert’s Axiom? There exists a line l and a point P not on l such that there are at least…