Approximation relative to an ultra function
Tulsi Dass Narang (1986)
Archivum Mathematicum
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Displaying similar documents to “New characterization for nonlinear weighted best simultaneous approximation.”
Approximation relative to an ultra function
On a theorem of Ky Fan
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Suitable norms for simultaneous approximation.
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Some Fixed Point Theorems And Their Applications To Best Simultaneous Approximations
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The approximation in the uniform norm of a continuous function f(x) = f(x₁,...,xₙ) by continuous sums g₁(h₁(x)) + g₂(h₂(x)), where the functions h₁ and h₂ are fixed, is considered. A Chebyshev type criterion for best approximation is established in terms of paths with respect to the functions h₁ and h₂.
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J. Prasad (1972)
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