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Kelley-Morse+Types of well order is not a conservative extension of Kelley Morse
Authors:Haim Judah  M Victoria Marshall
Institution:(1) Department of Mathematics, Bar. Ilam University, 52900 Ramat-Gan, Israel;(2) Facultad de Matemáticas, P. Universidad Católica de Chile, Casilla 6177, Carreo 22, Santiago, Chile
Abstract:Summary Assuming the consistency ofZF + ldquoThere is an inaccessible number of inaccessiblesrdquo, we prove that Kelley Morse theory plus types is not a conservative extension of Kelley-Morse theory.This paper was partially supported by: ldquoDirección de Investigación de la Pontificia Universidad Católica de Chile (DIUC)rdquo; ldquoFondo Nacional de Desarrollo Científico y Tecnológicordquo (FONDECYT)
Keywords:03E70
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