Idempotent — 1 results found.
C. R. Math. Rep. Acad. Sci. Canada Vol. 1 (1) 1979, pp. 17–19
Irvin R. Hentzel/ Erwin Kleinfeld/ Harry F. Smith (Received: 1978/07/31)

Mathematical Reports - Comptes rendus mathématiques
of the Academy of Science | de l'Académie des sciences