
Let X be a \(T_ i\)-space, \(i\leq 2\). We define the \(T_ i\)-pseudoweight of X, \(\psi_ i(X)\), to be the least weight of a coarser \(T_ i\) topology on X. \textit{G. M. Reed} and \textit{P. L. Zenor} [Bull. Am. Math. Soc. 80, 879-880 (1974; Zbl 0293.54026)] have shown that if X is a Moore space, and \(| X| \leq 2^{\omega}\), then \(\psi_ 1(X)=\omega\), but there is a Moore space, X, such that \(\psi_ 2(X)=w(X)=| X| =\omega_ 1\). Theorem 1: If X is metric, \(\psi_ 0(X)=\psi_ 2(X)=\log w(X)\), where log \(\kappa\) \(=\min \{\lambda: 2^{\lambda}\geq \kappa \}\). Theorem 2: If X is compact and \(T_ 2\), then \(\psi_ 1(X)=\psi_ 2(X)=w(X)\) (but it is possible to have \(\psi_ 0(X)=\log w(X)
Lindelöf degree, density, linearly ordered topological space (LOTS), Linearly ordered topological spaces, generalized ordered spaces, and partially ordered spaces, linearly ordered topological space, spread, generalized ordered space (GO-space), weight, cellularity, \(T_ i\)-pseudoweight, point-separating open cover, Cardinality properties (cardinal functions and inequalities, discrete subsets), Geometry and Topology, pseudoweight, pseudocharacter, height
Lindelöf degree, density, linearly ordered topological space (LOTS), Linearly ordered topological spaces, generalized ordered spaces, and partially ordered spaces, linearly ordered topological space, spread, generalized ordered space (GO-space), weight, cellularity, \(T_ i\)-pseudoweight, point-separating open cover, Cardinality properties (cardinal functions and inequalities, discrete subsets), Geometry and Topology, pseudoweight, pseudocharacter, height
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