Singular cohomology in L

Howard L. Hiller; Saharon Shelah

doi:10.1007/BF03007650

Singular cohomology in L

Howard L. Hiller^*
, Saharon Shelah

^*Corresponding author for this work

Einstein Institute of Mathematics

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

We prove, that in the world of constructible sets, there does not exist a space X with H″ (X,Z) isomorphic to the rational numbers. The proof requires a result about the growth of Ext_z^Emphasis>/i (-, Z) inside of Gödel's constructible universe L.

Original language	English
Pages (from-to)	313-319
Number of pages	7
Journal	Israel Journal of Mathematics
Volume	26
Issue number	3-4
DOIs	https://doi.org/10.1007/BF03007650
State	Published - Sep 1977

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abstract = "We prove, that in the world of constructible sets, there does not exist a space X with H″ (X,Z) isomorphic to the rational numbers. The proof requires a result about the growth of Ext z Emphasis>/i (-, Z) inside of G{\"o}del's constructible universe L.",

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year = "1977",

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Singular cohomology in L

Abstract

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