Xo-CATEGORICAL STRUCTURES SMOOTHLY APPROXIMATED BY FINITE SUBSTRUCTURES
نویسندگان
چکیده
A classification is given of primitive K0-categorical structures which are smoothly approximated by a chain of finite homogeneous substructures. The proof uses the classification of finite simple groups and some representation theory. The main theorems give information about a class of structures more general than the X0-categorical, co-stable structures examined by Cherlin, Harrington, and Lachlan.
منابع مشابه
Monge-ampère Equations and Moduli Spaces of Manifolds of Circular Type
A (bounded) manifold of circular type is a complex manifold M of dimension n admitting a (bounded) exhaustive real function u, defined on M minus a point xo, so that: a) it is a smooth solution on M \{xo} to the MongeAmpère equation (ddcu)n = 0; b) xo is a singular point for u of logarithmic type and eu extends smoothly on the blow up of M at xo; c) ddc(eu) > 0 at any point of M \ {xo}. This cl...
متن کاملA Method for Determination of the Fundamental Period of Layered Soil Profiles
In this study, a method is proposed to determine the fundamental period of layered soil profiles. A model considering the layered soil as shear type structure is used. At first, the soil profile is divided into substructures. Then, the stiffness matrices of the substructures considered as the equivalent shear structures are assembled according to the Finite Element Method. Thereinafter, the sti...
متن کاملFinite satisfiability and ℵ0-categorical structures with trivial dependence
The main subject of the article is the finite submodel property for א0-categorical structures, in particular under the additional assumptions that the structure is simple, 1-based and has trivial dependence. Here, a structure has the finite submodel property if every sentence which is true in the structure is true in a finite substructure of it. It will be useful to consider a couple of other f...
متن کاملHolomorphic Approximation on Compact Pseudoconvex Complex Manifolds
Let M be a smoothly bounded compact pseudoconvex complex manifold of finite type in the sense of D’Angelo such that the complex structure of M extends smoothly up to bM . Let m be an arbitrary nonnegative integer. Let f be a function in H(M) ∩Hm(M), where Hm(M) is the Sobolev space of order m. Then f can be approximated by holomorphic functions on M in the Sobolev space Hm(M). Also, we get a ho...
متن کاملNumerical solution of base shear in high tensioned cable antenna
A finite element solution based on equevalent elements is proposed for the static and dynamic analysis of tallhigh tensioned cable antennas. To reduce high number of degrees of freedom in space frame body of a structure, a simple equivalent beam element is defined for each simulative substructure. This numerical procedure is applicable to analyze complex three dimensional assemblies of substruc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1989