| Article ID: | iaor19931970 |
| Country: | Hungary |
| Volume: | 15 |
| Start Page Number: | 309 |
| End Page Number: | 327 |
| Publication Date: | Nov 1990 |
| Journal: | Alkalmazott Mathematikai Lapok |
| Authors: | Komlsi Sndor |
| Keywords: | optimization |
The role of the concept of first order approximation introduced by A.D. Ioffe and weakened by the author is analyzed in this paper. After recalling some known results concerning convex first order approximations the geometric background for quasiconvex approximations is investigated in order to obtain