AbstractAssume A is a normed linear space, B is a Banach space, and f: A → B is a mapping “approximately linear.” We solve the following Ulam problem: “Give conditions in order for a linear mapping near an approximately linear mapping to exist.
AbstractThe present paper deals with several characterization theorems for best approximation in nor...
summary:In this paper the notion of the derivative of the norm of a linear mapping in a normed vecto...
AbstractWe consider the class of linear mappings, between real or complex inner product spaces, such...
AbstractLet E1 be a real normed vector space and E2 a real Banach space. S. M. Ulam posed the proble...
AbstractLet E1 be a real normed vector space and E2 a real Banach space. S. M. Ulam posed the proble...
mapping near an approximately linear mapping to exist". According to P. M. Gru-ber (Trans. Amer...
AbstractA historical account is given of the development of methods for solving approximation proble...
AbstractWe compare linear and non–linear approximations for linear problems. Let X be a linear space...
AbstractIn 1940 S. M. Ulam proposed at the University of Wisconsin theproblem: “Give conditions in o...
AbstractIn the present paper we study the problem of S. M. Ulam for approximately multiplicative map...
This paper contains an exposition of two theorems on Banach spaces. Let X and Y be real Banach space...
ABSTRACT. In 1940S. M. Ulam proposedat the Universityof Wis-consintheproblem:"Giveconditionsin ...
The purpose of this paper is to introduce and discuss the concept of best approximation and best coa...
Some new characterization for the best approximants from linear subspaces in normed linear spaces in...
The problem of approxiamation and best approximation has been studied by many mathematicians. Most o...
AbstractThe present paper deals with several characterization theorems for best approximation in nor...
summary:In this paper the notion of the derivative of the norm of a linear mapping in a normed vecto...
AbstractWe consider the class of linear mappings, between real or complex inner product spaces, such...
AbstractLet E1 be a real normed vector space and E2 a real Banach space. S. M. Ulam posed the proble...
AbstractLet E1 be a real normed vector space and E2 a real Banach space. S. M. Ulam posed the proble...
mapping near an approximately linear mapping to exist". According to P. M. Gru-ber (Trans. Amer...
AbstractA historical account is given of the development of methods for solving approximation proble...
AbstractWe compare linear and non–linear approximations for linear problems. Let X be a linear space...
AbstractIn 1940 S. M. Ulam proposed at the University of Wisconsin theproblem: “Give conditions in o...
AbstractIn the present paper we study the problem of S. M. Ulam for approximately multiplicative map...
This paper contains an exposition of two theorems on Banach spaces. Let X and Y be real Banach space...
ABSTRACT. In 1940S. M. Ulam proposedat the Universityof Wis-consintheproblem:"Giveconditionsin ...
The purpose of this paper is to introduce and discuss the concept of best approximation and best coa...
Some new characterization for the best approximants from linear subspaces in normed linear spaces in...
The problem of approxiamation and best approximation has been studied by many mathematicians. Most o...
AbstractThe present paper deals with several characterization theorems for best approximation in nor...
summary:In this paper the notion of the derivative of the norm of a linear mapping in a normed vecto...
AbstractWe consider the class of linear mappings, between real or complex inner product spaces, such...
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