An α4 , not Fréchet product of α4 Fréchet spaces
نویسندگان
چکیده
منابع مشابه
On a problem of Nogura about the product of Fréchet - Urysohn 〈 α 4 〉 - spaces
Assuming Martin’s Axiom, we provide an example of two Fréchet-Urysohn 〈α4〉-spaces, whose product is a non-Fréchet-Urysohn 〈α4〉-space. This gives a consistent negative answer to a question raised by T. Nogura.
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ژورنال
عنوان ژورنال: Topology and its Applications
سال: 2000
ISSN: 0166-8641
DOI: 10.1016/s0166-8641(00)90096-8