منابع مشابه
Nonlinear Elliptic Problems
with Aa having at most polynomial growth, by applying a general theorem concerning nonlinear functional equations in reflexive Banach spaces. Our result in [ l] extended and generalized results announced earlier by M. I. Visik [6; 7; 8] and obtained by more concrete analytic arguments. Visik's detailed account of his results which has just appeared in [9] has one feature which goes beyond the f...
متن کاملNonlinear Elliptic Boundary Value Problems
It is the object of the present note to present a new nonlinear version of the orthogonal projection method for proving the existence of solutions of nonlinear elliptic boundary value problems. The key point in this method is the application of a new general theorem concerning the solvability of nonlinear functional equations in a reflexive Banach space involving operators which may not be cont...
متن کاملVariational Methods for Nonlinear Elliptic Eigenvalue Problems
In the present note, we give a simple general proof for the existence of solutions of the following two types of variational problems: PROBLEM A. To minimize fa F(x> u, • • • , Du)dx over a subspace VofW>*(tt). PROBLEM B. TO minimize ƒ« F(x, w, • • • , Du)dx for u in V with / a G(x, u, • • • , D^u)dx^c. The solution of the first problem yields a weak solution of a corresponding elliptic boundar...
متن کاملA Class of Nonlinear Elliptic Problems*
We obtain a strict coercivity estimate, (generalizing that of T. I. Seidman [J. Differential Equations 19 (1975), 242-2571 in considering spatial variation) for second order elliptic operators A: UH -V. y(.. Vu) with y “radial in the gradient”--y(., t)=a(., l[])i; for 5~ Iw”. The estimate is then applied to obtain existence of solutions of boundary value problems: -V t?(,, u, lVu[ ) Vu = f (., ...
متن کاملOrlicz Spaces and Nonlinear Elliptic Eigenvalue Problems
Nonlinear elliptic differential equations of order m acting in a space of m dimensions often occupy a special position in more general theories. In this paper we shall study one aspect of this situation. The nonlinear problem under consideration will be the variational approach to eigenvalue problems for nonlinear elliptic partial differential equations as developed by the author in [l], [2], [...
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ژورنال
عنوان ژورنال: Bulletin of the American Mathematical Society
سال: 1964
ISSN: 0002-9904
DOI: 10.1090/s0002-9904-1964-11134-4