We give a simple example of a Frechet space and a metrizable space whose product is not sequential. A consequence of our example is that the product of the sequential fan and a first countable space Y is sequential iff Y is locally countably compact.
机构:
Rzeszow Univ Technol, Fac Math & Appl Phys, Powstancow Warszawy 8, PL-35959 Rzeszow, PolandRzeszow Univ Technol, Fac Math & Appl Phys, Powstancow Warszawy 8, PL-35959 Rzeszow, Poland
Dudek, Szymon
Olszowy, Leszek
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机构:
Rzeszow Univ Technol, Fac Math & Appl Phys, Powstancow Warszawy 8, PL-35959 Rzeszow, PolandRzeszow Univ Technol, Fac Math & Appl Phys, Powstancow Warszawy 8, PL-35959 Rzeszow, Poland