منابع مشابه
Generalized Affine Functions and Generalized Differentials
We study some classes of generalized a¢ ne functions, using a generalized di¤erential. We study some properties and characterizations of these classes and we devise some characterizations of solution sets of optimization problems involving such functions or functions of related classes. Key words: colinvex, colin ne, generalized di¤erential, optimization problem, protoconvex function, pseudocon...
متن کاملGeneralized convex functions and generalized differentials
We study some classes of generalized convex functions, using a generalized di¤erential approach. By this we mean a set-valued mapping which stands either for a derivative, a subdi¤erential or a pseudodi¤erential in the sense of Jeyakumar and Luc. We establish some links between the corresponding classes of pseudoconvex, quasiconvex and another class of generalized convex functions we introduced...
متن کاملHolomorphic Differentials as Functions of Moduli
The purpose of this note is to strengthen the results of [3 ] and to indicate a very brief derivation of some theorems announced without proof in [ l ; 3 ] . We begin by indicating a correction to [3]. Let Si and S2 be Riemann surfaces, ƒ an orientation preserving (orientation reversing) homeomorphism of bounded eccentricity of Si onto 52 and [ƒ] the homotopy class of/; then (Si, [ƒ], S2) is ca...
متن کاملstudy of hash functions based on chaotic maps
توابع درهم نقش بسیار مهم در سیستم های رمزنگاری و پروتکل های امنیتی دارند. در سیستم های رمزنگاری برای دستیابی به احراز درستی و اصالت داده دو روش مورد استفاده قرار می گیرند که عبارتند از توابع رمزنگاری کلیددار و توابع درهم ساز. توابع درهم ساز، توابعی هستند که هر متن با طول دلخواه را به دنباله ای با طول ثابت تبدیل می کنند. از جمله پرکاربردترین و معروف ترین توابع درهم می توان توابع درهم ساز md4, md...
Using differentials to differentiate trigonometric and exponential functions
then dropping the last term, an operation that can be justified in terms of limits. Differential notation, in general, can be regarded as a shorthand for a formal limit argument. Still more informally, one can argue that du is small compared to u, so that the last term can be ignored at the level of approximation needed. After dropping du and dividing by du, one obtains the derivative, namely d...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Fundamenta Mathematicae
سال: 1930
ISSN: 0016-2736,1730-6329
DOI: 10.4064/fm-15-1-61-94