共 50 条
- [3] FACTORIZATION OF FUNCTIONS AND INDEFINITELY DIFFERENTIABLE VECTORS BULLETIN DES SCIENCES MATHEMATIQUES, 1978, 102 (04): : 305 - 330
- [4] An extremum problem on a class of differentiable functions of several variables Mathematical Notes, 1997, 62 : 160 - 171
- [5] Extending n times differentiable functions of several variables Czechoslovak Mathematical Journal, 1999, 49 : 825 - 830
- [10] A remarkable property of indefinitely differentiable functions. COMPTES RENDUS HEBDOMADAIRES DES SEANCES DE L ACADEMIE DES SCIENCES, 1939, 208 : 1780 - 1783