AB-COMPACTA ´ JUHASZ ´ ISAAC GORELIC AND ISTVAN Abstract. We define a compactum X to be AB-compact if the cofinality of the character χ(x, Y ) is countable whenever x ∈ Y

First Page		Document Content
Date: 2010-08-29 05:46:50 Ordinal numbers Cardinal numbers Order theory Topological spaces Separable space First-countable space Cofinality Constructible universe Compact space Topology General topology Mathematics		AB-COMPACTA ´ JUHASZ ´ ISAAC GORELIC AND ISTVAN Abstract. We define a compactum X to be AB-compact if the cofinality of the character χ(x, Y ) is countable whenever x ∈ Y Add to Reading List Source URL: www.math-inst.hu Download Document from Source Website File Size: 157,89 KB Share Document on Facebook

	A MODEL FOR A VERY GOOD SCALE AND A BAD SCALE DIMA SINAPOVA Abstract. Given a supercompact cardinal κ and a regular cardinal λ < κ, we describe a type of forcing such that in the generic extension the cofinality of κ DocID: 1uzkc - View Document
	KILLING GCH EVERYWHERE BY A COFINALITY-PRESERVING FORCING NOTION OVER A MODEL OF GCH SY-DAVID FRIEDMAN AND MOHAMMAD GOLSHANI Abstract. Starting from large cardinals we construct a pair V1 ⊆ V2 of models of ZF C with th DocID: 1mkT9 - View Document
	SET THEORY Contents 1. Introduction 2. Everything is a set 3. Classes DocID: 11WgV - View Document
	Improving the Consistency Strength of Reflection at ℵω+1 Abstract: Reflection at ℵω+1 , the statement that every stationary subset of ℵω+1 has a reflection point below ℵω+1 , was shown to be consistent given DocID: FP0w - View Document
	AB-COMPACTA ´ JUHASZ ´ ISAAC GORELIC AND ISTVAN Abstract. We define a compactum X to be AB-compact if the cofinality of the character χ(x, Y ) is countable whenever x ∈ Y DocID: cZSM - View Document