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Proceedings of the American Mathematical Society
Proceedings of the American Mathematical Society
ISSN 1088-6826(online) ISSN 0002-9939(print)


The intersection multiplicity of $ n$-dimensional paracompact spaces

Author: Glenn P. Weller
Journal: Proc. Amer. Math. Soc. 50 (1975), 402-404
MSC: Primary 54D20
MathSciNet review: 0372822
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Abstract: It is shown that there is an integer $ \nu (n) \leq {3^{2n + 1}} - 1$ such that any $ n$-dimensional paracompact space $ X$ has intersection multiplicity at most $ \nu (n)$. That is, if $ \mathcal{U}$ is an open cover of $ X$, then there is an open cover $ \mathcal{V}$ refining $ \mathcal{U}$ such that any element of $ \mathcal{V}$ intersects at most $ \nu (n)$ elements of $ \mathcal{V}$.

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PII: S 0002-9939(1975)0372822-2
Keywords: Intersection multiplicity, paracompact spaces, simplicial complex, dimension
Article copyright: © Copyright 1975 American Mathematical Society

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