ar X iv : 0 70 8 . 27 85 v 2 [ m at h . G M ] 1 9 N ov 2 00 7 The Uniform Order Convergence Structure on ML

نویسنده

  • J H Van Der Walt
چکیده

The aim of this paper is to set up appropriate uniform convergence spaces in which to reformulate and enrich the Order Completion Method [25] for nonlinear PDEs. In this regard, we consider an appropriate space ML (X) of normal lower semi-continuous functions. The space ML (X) appears in the ring theory of C (X) and its various extensions [15], as well as in the theory of nonlinear, PDEs [25] and [28]. We define a uniform convergence structure, in the sense of [11], on ML (X) such that the induced convergence structure is the order convergence structure, as introduced in [7] and [32]. The uniform convergence space completion of ML (X) is constructed as the space all normal lower semi-continuous functions on X. It is then shown how these ideas may be applied to solve nonlinear PDEs. In particular, we construct generalized solutions to the Navier-Stokes Equations in three spatial dimensions, subject to an initial condition.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

ar X iv : m at h / 06 02 50 8 v 2 [ m at h . G R ] 1 9 N ov 2 00 7 PRESENTATIONS OF FINITE SIMPLE GROUPS : A QUANTITATIVE APPROACH

There is a constant C 0 such that all nonabelian finite simple groups of rank n over Fq, with the possible exception of the Ree groups 2 G 2 (3 2e+1), have presentations with at most C 0 generators and relations and total length at most C 0 (log n + log q). As a corollary, we deduce a conjecture of Holt: there is a constant C such that dim H 2 (G, M) ≤ C dim M for every finite simple group G, e...

متن کامل

ar X iv : 0 70 4 . 25 87 v 2 [ m at h . G T ] 2 6 A ug 2 00 7 Uniform convergence in the mapping class group Richard

We characterize convex cocompact subgroups of the mapping class group of a surface in terms of uniform convergence actions on the zero locus of the limit set. We also construct subgroups that act as uniform convergence groups on their limit sets, but are not convex cocompact.

متن کامل

ar X iv : 0 70 8 . 43 10 v 3 [ m at h . A T ] 2 7 N ov 2 00 7 Z 2 ACTIONS ON 3 - CELL COMPLEXES

In this paper, we study Z2 actions on a 3-cell complex X having the cohomology of P (n)∨S or S ∨S ∨S . We determine the possible fixed point sets depending on whether or not X is totally non-homologous to zero in XZ2 and give examples of all possible cases.

متن کامل

ar X iv : 0 81 1 . 46 27 v 1 [ m at h . A C ] 2 7 N ov 2 00 8 On ( n , d ) - perfect rings

In this paper, we introduce the notion of “(n, d)-perfect rings” which is in some way a generalization of the notion of “S-rings”. After we give some basic results of this rings and we survey the relationship between “A(n) property” and “(n, d)-perfect property”. Finally, we investigate the “(n, d)-perfect property” in pullback rings.

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008