期刊名称:International Journal of Mathematics and Mathematical Sciences
印刷版ISSN:0161-1712
电子版ISSN:1687-0425
出版年度:1981
卷号:4
期号:4
页码:819-822
DOI:10.1155/S016117128100063X
出版社:Hindawi Publishing Corporation
摘要:
In a reference book for distributions [1], it is shown that the multiplication ( u , f ) ↦ u f on C ∞ × 𝒟 ′ , as well as on 𝒪 M × 𝒮 ′ , is hypocontinuous. We show here that in both cases it is discontinuous.