RT Book, Section SR 00 ID doi:10.1007/BFb0121140 A1 Demidova, V. A. A1 Demyanov, V.F. T1 A directional implicit function theorem for quasidifferentiable functions YR 1986 FD 1986 VO 29 SP 95 OP 107 AB The implicit and inverse function theorems provide an essential component of classical differential calculus, and for this reason many attempts have been made to extend these theorems to nonsmooth analysis (see, for example, the work of F. Clarke, H. Halkin, J.-B. Hiriart-Urruty, A.D. Ioffe, B.H. Pourciau, J. Warga). In this paper, we consider the case of quasidifferentiable functions. It is shown that to obtain nontrivial results it is necessary to study a directional implicit function problem (it turns out that in some directions there are several functions, while in others there are none). A2 Demyanov, V. F. A2 Dixon, L.C.W. T2 Quasidifferential Calculus PB Springer Berlin Heidelberg PP Germany T3 Mathematical Programming Studies SN 978-3-642-00929-7 AV Published LK https://pure.iiasa.ac.at/id/eprint/14127/ DO 10.1007/BFb0121140