Exact bounds for simultaneous approximation of functions of two variables and their derivatives by bilinear splines
2005 ◽
Vol 57
(2)
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pp. 173-185
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1989 ◽
Vol 41
(2)
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pp. 189-199
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2007 ◽
Vol 117
(3)
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pp. 387-399
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1979 ◽
Vol 35
(6)
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pp. 851-861
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2017 ◽
Vol 53
(3)
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pp. 426-431
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2021 ◽
Vol 17
(3)
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pp. 48-62