Geodesic
ON JOINTLY SOMEWHAT NEARLY CONTINUOUS FUNCTIONS
Acta mathematica Universitatis Comenianae, Tome 63 (1994) no. 2 
O. Vancso. ON JOINTLY SOMEWHAT NEARLY CONTINUOUS FUNCTIONS. Acta mathematica Universitatis Comenianae, Tome 63 (1994) no. 2. http://geodesic.mathdoc.fr/item/AMUC_1994_63_2_a5/
@article{AMUC_1994_63_2_a5,
     author = {O. Vancso},
     title = {ON {JOINTLY} {SOMEWHAT} {NEARLY} {CONTINUOUS} {FUNCTIONS}},
     journal = {Acta mathematica Universitatis Comenianae},
     year = {1994},
     volume = {63},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/AMUC_1994_63_2_a5/}
}
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Voir la notice de l'article provenant de la source Comenius University

This article answers three questions of Piotrowski (see Ref. 1) namely whether or not the separately somewhat, separately nearly or separately somewhat nearly continuity implies the jointly somewhat nearly continuity.\newline Further we investigate the weakening of the conditions of Piotrowski on the spaces $X$, $Y$, $Z$.