scholarly journals Constrained best approximation in Hilbert space, II

1992 ◽  
Vol 71 (2) ◽  
pp. 213-238 ◽  
Author(s):  
Charles K Chui ◽  
Frank Deutsch ◽  
Joseph D Ward
Keyword(s):  
Hilbert Space ◽  
Best Approximation ◽  
Constrained Best Approximation

Constrained best approximation in Hilbert space

1990 ◽  
Vol 6 (1) ◽  
pp. 35-64 ◽  
Author(s):  
Charles K. Chui ◽  
Frank Deutsch ◽  
Joseph D. Ward
Keyword(s):  
Hilbert Space ◽  
Best Approximation ◽  
Constrained Best Approximation

Constrained best approximation in Hilbert space III. Applications ton-convex functions

1996 ◽  
Vol 12 (3) ◽  
pp. 361-384 ◽  
Author(s):  
F. Deutsch ◽  
V. A. Ubhaya ◽  
J. D. Ward ◽  
Yuesheng Xu
Keyword(s):  
Hilbert Space ◽  
Convex Functions ◽  
Best Approximation ◽  
Constrained Best Approximation

scholarly journals Best approximation in L∞ via iterative Hilbert space procedures

1984 ◽  
Vol 42 (2) ◽  
pp. 173-180 ◽  
Author(s):  
Mohamed S Bani ◽  
Bruce L Chalmers
Keyword(s):  
Hilbert Space ◽  
Best Approximation

scholarly journals Approximation of unbounded functional, defined by grades of normal operator, on the class of elements of Hilbert space

2016 ◽  
Vol 24 ◽  
pp. 3
Author(s):  
R.O. Bilichenko
Keyword(s):  
Hilbert Space ◽  
Best Approximation ◽  
Normal Operator ◽  
The Best Approximation

We obtain the best approximation of unbounded functional $(A^k x; f)$ on the class $\{ x\in D(A^r) \colon \| A^r x \| \leqslant 1 \}$ by linear bounded functionals for a normal operator $A$ in the Hilbert space $H$ ($k < r$, $f\in H$).

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