(x)方程解的关于参数依赖性

本文作者研究拟凸域上的(x)-方程解关于参数的解析依赖性.     

Bergman 穷竭, 完备与稳定性

Bergman核是国内外研究多复变函数论的一个传统课题,本文主要介绍利用超定的非齐次Cuauchy-Riemann方程组的现代Hilbert空间理论研究Bergman核的穷竭性,稳定性与Bergman度量的完备性所取得的最新进展。     

复流形上具有非光滑边界的强拟凸域上带权因子的Koppelman-Leray公式

利用权因子,我们得到了复流形上边界不必光滑的强拟凸域上（狆,狇）微分形式的带权因子的Ｋｏｐｐｅｌｍａｎ Ｌｅｒａｙ公式及其 方程的带权因子的解,其特点是不含有边界积分,从而避免了边界积分的复杂估计．其次,引进了权因子,带权因子的积分公式在应用上具有更大的灵活性．     

A new technique of integral representations in Cn

A new technique of integral representations in Cn, which is different from the well-known Henkin technique, is given. By means of this new technique, a new integral formula for smooth functions and a new integral representation of solutions of the -equations on strictly pseudoconvex domains in Cn are obtained. These new formulas are simpler than the classical ones, especially the solutions of the -equations admit simple uniform estimates. Moreover, this new technique can be further applied to arbitrary bounded domains in Cn so that all corresponding formulas are simplified.     

A new technique of integral representations in ?n

A new technique of integral representations in ℂ ⁿ , which is different from the well-known Henkin technique, is given. By means of this new technique, a new integral formula for smooth functions and a new integral representation of solutions of the ∂-equations on strictly pseudoconvex domains in ℂ ⁿ are obtained. These new formulas are simpler than the classical ones, especially the solutions of the ∂-equations admit simple uniform estimates. Moreover, this new technique can be further applied to arbitrary bounded domains in ℂ ⁿ so that all corresponding formulas are simplified.     

On paratopological vector spaces

We show that each first countable paratopological vector space X has a compatible translation invariant quasi-metric such that the open balls are convex whenever X is a pseudoconvex vector space. We introduce the notions of a right-bounded subset and of a right-precompact subset of a paratopological vector space X and prove that X is quasi-normable if and only if the origin has a convex and right-bounded neighborhood. Duality in this context is also discussed. Furthermore, it is shown that the bicompletion of any paratopological vector space (respectively, of any quasi-metric vector space) admits the structure of a paratopological vector space (respectively, of a quasi-metric vector space). Finally, paratopological vector spaces of finite dimension are considered. This revised version was published online in June 2006 with corrections to the Cover Date.     

Minimizing pseudoconvex functions on convex compact sets

An algorithm is presented which minimizes continuously differentiable pseudoconvex functions on convex compact sets which are characterized by their support functions. If the function can be minimized exactly on affine sets in a finite number of operations and the constraint set is a polytope, the algorithm has finite convergence. Numerical results are reported which illustrate the performance of the algorithm when applied to a specific search direction problem. The algorithm differs from existing algorithms in that it has proven convergence when applied to any convex compact set, and not just polytopal sets.This research was supported by the National Science Foundation Grant ECS-85-17362, the Air Force Office Scientific Research Grant 86-0116, the Office of Naval Research Contract N00014-86-K-0295, the California State MICRO program, and the Semiconductor Research Corporation Contract SRC-82-11-008.     

Maximal Monotone Multifunctions of Br?ndsted–Rockafellar Type

We consider whether the inequality-splitting property established in the Brøndsted–Rockafellar theorem for the subdifferential of a proper convex lower semicontinuous function on a Banach space has an analog for arbitrary maximal monotone multifunctions. We introduce the maximal monotone multifunctions of type (ED), for which an inequality-splitting property does hold. These multifunctions form a subclass of Gossez"s maximal monotone multifunctions of type (D); however, in every case where it has been proved that a multifunction is maximal monotone of type (D) then it is also of type (ED). Specifically, the following maximal monotone multifunctions are of type (ED): ultramaximal monotone multifunctions, which occur in the study of certain nonlinear elliptic functional equations; single-valued linear operators that are maximal monotone of type (D); subdifferentials of proper convex lower semicontinuous functions; subdifferentials of certain saddle-functions. We discuss the negative alignment set of a maximal monotone multifunction of type (ED) with respect to a point not in its graph – a mysterious continuous curve without end-points lying in the interior of the first quadrant of the plane. We deduce new inequality-splitting properties of subdifferentials, almost giving a substantial generalization of the original Brøndsted–Rockafellar theorem. We develop some mathematical infrastructure, some specific to multifunctions, some with possible applications to other areas of nonlinear analysis: the formula for the biconjugate of the pointwise maximum of a finite set of convex functions – in a situation where the obvious formula for the conjugate fails; a new topology on the bidual of a Banach space – in some respects, quite well behaved, but in other respects, quite pathological; an existence theorem for bounded linear functionals – unusual in that it does not assume the existence of any a priori bound; the 'big convexification" of a multifunction.     

An extension of H. Cartan's theorem

In this article we prove that if , , is a bounded pseudoconvex domain with real analytic boundary, then for each , there exists a fixed open neighborhood of and an open neighborhood of in such that any can be extended holomorphically to , and that the action defined by

is real analytic in joint variables. This extends H. Cartan's theorem beyond the boundary. Some applications are also discussed here.