نتایج جستجو برای: s y directions in depth z
تعداد نتایج: 17476637 فیلتر نتایج به سال:
فرض کنیم $g$ یک گروه متناهی و $xsubseteq g$ باشد. گراف جابه جایی $c(g,x)$ عبارت است از گرافی با مجموعه رئوس $x$ به طوری که برای هر $x,yin x$، $xy$ یال است اگر و تنها اگر $xy = yx$. این گراف به طرق گوناگون بررسی شده است. در این جا دو حالت $c(g,g)$ و $c(g,g setminus z(g))$ را در نظر می گیریم. هدف ما بررسی ساختار، ویژگی های متریک و خواص گروه خودریختی های این گراف هاست. عل...
The main objective of this tutorial is to introduce basic requirements and concepts of balancing piston/connecting-rod/crankshaft assembly in an engine. In order to be able to portray a coherent picture we need to introduce some simple tools used in statics and dynamics of objects. The approach taken here is combination of algebraic and geometric presentation to maximize physical understanding....
(BES Collaboration) J. Z. Bai, Y. Ban, J. G. Bian, X. Cai, J. F. Chang, H. F. Chen, H. S. Chen, J. Chen, Jie Chen, J. C. Chen, Y. B. Chen, S. P. Chi, Y. P. Chu, X. Z. Cui, Y. M. Dai, Y. S. Dai, L. Y. Dong, S. X. Du, Z. Z. Du, W. Dunwoodie, J. Fang, S. S. Fang, C. D. Fu, H. Y. Fu, L. P. Fu, C. S. Gao, M. L. Gao, Y. N. Gao, M. Y. Gong, W. X. Gong, S. D. Gu, Y. N. Guo, Y. Q. Guo, Z. J. Guo, S. W. ...
Suppose we are given three goods, X,Y , and Z. They are not homogeneous, but come in different qualities, x ∈ X , y ∈ Y and z ∈ Z. Goods X and Y are used for the sole purpose of producing good Z, which we are interested in. To obtain one piece of good Z, one has to assemble one piece of good X and one piece of good Y . More precisely, one can obtain a piece of quality z by assembling one piece ...
If in the classical S-category P, 1) continuous mappings are replaced by compact-open strong shape (= coss) morphisms (cf. §1 or [1], §2), and 2) ∧-products are properly reinterpreted, then an S-duality theorem for arbitrary subsets X ⊂ S (rather than for compact polyhedra) holds (Theorem 2.1). 0. Introduction. In a previous paper [1] we introduced the concept of coss-shape (compact-open strong...
In this paper, we introduce a method by which we can find a close connection between the set of prime $z$-ideals of $C(X)$ and the same of $C(Y)$, for some special subset $Y$ of $X$. For instance, if $Y=Coz(f)$ for some $fin C(X)$, then there exists a one-to-one correspondence between the set of prime $z$-ideals of $C(Y)$ and the set of prime $z$-ideals of $C(X)$ not containing $f$. Moreover, c...
Artificial neural networks (ANNs) and f u z z y logic are complementary technologies. A N N s extract information f rom systems to be learned or controlled, while fuzzy techniques most often use verbal information f rom experts. Ideally, the two sources o f information should be combined. For example, one can learn rules in a hybrid fashion and then calibrate them f o r better whole-system perf...
In the space U of cubic forms of surfaces, regarded as a G-space and endowed with a natural invariant metric, the ratio of the volumes of those representing umbilic points with negative to those with positive indexes is evaluated in terms of the asymmetry of the metric, defined here. A connection of this ratio with that reported by Berry and Hannay (1977) in the domain of Statistical Physics, i...
The following propositions are true: (1) Let S, T be non empty relational structures and f be a map from S into T. Suppose f is one-to-one and onto. Then f · f −1 = id T and f −1 · f = id S and f −1 is one-to-one and onto. (2) Let X, Y be non empty sets, Z be a non empty relational structure, S be a non empty relational substructure of Z [: X,Y :] , T be a non empty relational substructure of (...
In this paper, we investigate the Hyers-Ulam stability of the orthogonally cubic equation and Pexiderized cubic equation [f(kx+y)+f(kx-y)=g(x+y)+g(x-y)+frac{2}{k}g(kx)-2g(x),]in multi-normed spaces by the direct method and the fixed point method. Moreover, we prove the Hyers-Ulam stability of the $2$-variables cubic equation [ f(2x+y,2z+t)+f(2x-y,2z-t) =2...
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