Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Ştefan Cobzaş"'
Autor:
Ştefan Cobzaş
Publikováno v:
Mathematics, Vol 12, Iss 3, p 471 (2024)
Roughly speaking, Ekeland’s Variational Principle (EkVP) (J. Math. Anal. Appl. 47 (1974), 324–353) asserts the existence of strict minima of some perturbed versions of lower semicontinuous functions defined on a complete metric space. Later, Pand
Externí odkaz:
https://doaj.org/article/e1de81d61d6744ac95535aa051108f8b
Publikováno v:
Axioms, Vol 12, Iss 3, p 247 (2023)
We prove a version of the Ekeland Variational Principle (EkVP) in a weighted graph G and its equivalence to Caristi fixed point theorem and to the Takahashi minimization principle. The usual completeness and topological notions are replaced with some
Externí odkaz:
https://doaj.org/article/4f52d967ecb74309a934cbbaa2aad75c
Autor:
Ştefan Cobzaş, Costică Mustăţa
Publikováno v:
Journal of Numerical Analysis and Approximation Theory, Vol 35, Iss 1 (2006)
In this paper we shall present some results on spaces with asymmetric seminorms, with emphasis on best approximation problems in such spaces.
Externí odkaz:
https://doaj.org/article/28c29a5d5ccc4c2db82e48920f15ddf6
Autor:
Ştefan Cobzaş
Publikováno v:
Journal of Numerical Analysis and Approximation Theory, Vol 31, Iss 1 (2002)
The aim of the present paper is to show that many Phelps type duality result, relating the extension properties of various classes of functions (continuous, linear continuous, bounded bilinear, Hölder-Lipschitz) with the approximation properti
Externí odkaz:
https://doaj.org/article/192caa1e8fc14882baf6e4627c79f1ce
Autor:
Ştefan Cobzaş
Publikováno v:
Journal of Numerical Analysis and Approximation Theory, Vol 30, Iss 1 (2001)
The aim of this paper is to prove a compactness criterium in spaces of Lipschitz and Frechet dierentiable mappings.
Externí odkaz:
https://doaj.org/article/2f1bf42c42854d4294e9811fbd5c8fe8
Autor:
Ştefan Cobzaş
Publikováno v:
Journal of Numerical Analysis and Approximation Theory, Vol 27, Iss 1 (1998)
Not available.
Externí odkaz:
https://doaj.org/article/2147f6202af74487b3a5b5b2d779de34
Autor:
Ştefan Cobzaş, Costică Mustăța
Publikováno v:
Journal of Numerical Analysis and Approximation Theory, Vol 25, Iss 1 (1996)
Not available.
Externí odkaz:
https://doaj.org/article/363be61294704153936c6a4072ab7898
Autor:
Ştefan Cobzaş, C. Mustăţa
Publikováno v:
Journal of Numerical Analysis and Approximation Theory, Vol 24, Iss 1 (1995)
Not available.
Externí odkaz:
https://doaj.org/article/d70bf3967f5c4198b43f8ce30e9a476b
Autor:
Ştefan Cobzaş
Publikováno v:
Journal of Numerical Analysis and Approximation Theory, Vol 23, Iss 1 (1994)
Not available.
Externí odkaz:
https://doaj.org/article/e3fed9048e5447adb365d0c5c39b4112
Autor:
Ştefan Cobzaş
Publikováno v:
Journal of Numerical Analysis and Approximation Theory, Vol 21, Iss 2 (1992)
Not available.
Externí odkaz:
https://doaj.org/article/9f4492ce08444380be86870861c78077