منابع مشابه
Generalized Bi-Circular Projections
Let Ω be a connected compact Hausdorff space and X a Banach space for which the strong Banach-Stone property is valid. We give a complete characterization of the generalized bi-circular projection on the Banach spaces C(Ω) and C(Ω, X). We show that in each case generalized bi-circular projections are bi-contractive. We also give some results concerning projections in the convex hull of two or m...
متن کاملGeneralized Projections in Banach Algebras
In this note we investigate generalized projections in Banach algebras. Our results generalize results obtained for bounded linear operators on Hilbert spaces.
متن کاملGeneralized circular colouring of graphs
Let P be a graph property and r, s ∈ N, r ≥ s. A strong circular (P , r, s)-colouring of a graph G is an assignment f : V (G) → {0, 1, . . . , r − 1}, such that the edges uv ∈ E(G) satisfying |f(u) − f(v)| < s or |f(u) − f(v)| > r − s, induce a subgraph of G with the propery P . In this paper we present some basic results on strong circular (P , r, s)-colourings. We introduce the strong circula...
متن کاملGeneralized Orthogonal Projections and Shorted Operators
Let H be a Hilbert space, L(H) the algebra of all bounded linear operators on H and 〈 , 〉A : H×H → C the bounded sesquilinear form induced by a selfadjoint A ∈ L(H), 〈ξ, η〉A = 〈Aξ, η〉, ξ, η ∈ H. Given T ∈ L(H), T is A-selfadjoint if AT = T ∗A. If S ⊆ H is a closed subspace, we study the set of A-selfadjoint projections onto S, P(A,S) = {Q ∈ L(H) : Q = Q , R(Q) = S , AQ = Q∗A} for different choi...
متن کاملNon-uniform Slant Correction using Generalized Projections
Slant Correction is an important component of an Optical Character Recognition (OCR) system. The stronger the slant correction algorithm, the better the OCR system’s performance. In this work, a non-uniform slant estimation algorithm is presented. The algorithm uses the generalized projections of the word image. The algorithm is simple and robust. To evaluate the efficacy of the algorithm, imag...
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: Journal of Mathematical Analysis and Applications
سال: 2008
ISSN: 0022-247X
DOI: 10.1016/j.jmaa.2007.07.017