On the concept of boundary ; The definition of a boundary by means of continuous mappings ; On the equivalence of certain methods of definition of a boundary
By: Prepared under contract N8-onr-553 with the Office of Naval Research by the American Mathematical Society
Series: American Mathematical Society translations -- no. 51
Published: 1951
Place of publication: New York
Language: eng
Number of pages: 52
Subjects: Mathematical physics
Notes: Translations from articles from Matematicheskii sbornik, n.s. 25 (67), 1949, p. 387-414; n.s. 26 (68), 1950, p. 225-227; n.s. 26 (68), 1950, p. 228-236.