Semi-continuous decomposition
From Encyclopedia of Mathematics
upper (lower)
A decomposition $D$, i.e. a closed disjoint covering, of a topological space $X$ such that the quotient mapping $p : X \rightarrow D$ is a closed mapping (open mapping).
How to Cite This Entry:
Semi-continuous decomposition. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Semi-continuous_decomposition&oldid=17298
Semi-continuous decomposition. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Semi-continuous_decomposition&oldid=17298
This article was adapted from an original article by M.I. Voitsekhovskii (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article