Geodesic
Two-fold theorem on Fréchetness of products
Czechoslovak Mathematical Journal, Tome 49 (1999) no. 2, pp. 421-429

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A refined common generalization of known theorems (Arhangel’skii, Michael, Popov and Rančin) on the Fréchetness of products is proved. A new characterization, in terms of products, of strongly Fréchet topologies is provided.
Classification : 54A20, 54B10, 54D50, 54D55, 54G15
Keywords: $\alpha_3$; $\alpha_4$; $\beta_3$; $\beta_4$ spaces; $\Phi$-space; product space; sequential space; sequentially subtransverse; strongly Fréchet; transverse 
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     author = {Dolecki, S. and Nogura, T.},
     title = {Two-fold theorem on {Fr\'echetness} of products},
     journal = {Czechoslovak Mathematical Journal},
     pages = {421--429},
     publisher = {mathdoc},
     volume = {49},
     number = {2},
     year = {1999},
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     zbl = {0949.54010},
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     url = {http://geodesic.mathdoc.fr/item/CMJ_1999__49_2_a16/}
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Dolecki, S.; Nogura, T. Two-fold theorem on Fréchetness of products. Czechoslovak Mathematical Journal, Tome 49 (1999) no. 2, pp. 421-429. http://geodesic.mathdoc.fr/item/CMJ_1999__49_2_a16/