P. Szeptycki

most citedA counterexample in the theory of

D

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math.GN2013

A new class of spaces with all finite powers Lindelof

Natasha May, Santi Spadaro, Paul Szeptycki

We consider a new class of open covers and classes of spaces defined from them, called "iota spaces". We explore their relationship with epsilon-spaces (that is, spaces having all…

math.GN2011★ 1 cited

A counterexample in the theory of $D$ -spaces

Daniel T. Soukup, Paul J. Szeptycki

Assuming $♢$ , we construct a $T_{2}$ example of a hereditarily Lindelöf space of size $ω_{1}$ which is not a $D$ -space. The example has the property that all finite powers a…

A new class of spaces with all finite powers Lindelof

A counterexample in the theory of D-spaces

A counterexample in the theory of $D$ -spaces