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. 1957 Oct 15;43(10):935–937. doi: 10.1073/pnas.43.10.935
A GENERALIZATION OF WHITNEY'S THEOREM ON IDEALS OF DIFFERENTIABLE FUNCTIONS
Leopoldo Nachbin
1,2,*
Leopoldo Nachbin
1UNIVERSITY OF CHICAGO, CHICAGO, ILLINOIS
2INSTITUTO DE MATEMÁTICA PURA E APLICADA, RIO DE JANEIRO, BRAZIL
Find articles by Leopoldo Nachbin
1UNIVERSITY OF CHICAGO, CHICAGO, ILLINOIS
2INSTITUTO DE MATEMÁTICA PURA E APLICADA, RIO DE JANEIRO, BRAZIL
*
The work reported in this note was done while the author was a fellow of the Rockefeller Foundation on leave of absence from the University of Brazil, Rio de Janeiro.
PMCID: PMC528556 PMID: 16590114