Semi-continuous decomposition
From Encyclopedia of Mathematics
upper (lower)
A decomposition 
, i.e. a closed disjoint covering, of a topological space 
such that the quotient mapping 
is closed (open) (cf. Open mapping; Closed 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