Lebesgue spaces are considered with Muckenhoupt weights. Fractional order mixed difference operator is investigated to obtain mixed fractional modulus of smoothness in these spaces. Using this modulus of smoothness we give the proof of direct and inverse estimates of angular trigonometric approximation. Also we obtain an equivalence between fractional mixed modulus of smoothness and fractional mixed K-functional.
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Difference Operator Lebesgue spaces Muckenhoupt weights Angular Trigonometric Approximation mixed modulus of smoothness
Balikesir University Research Projects
2019/01
2019/01
Primary Language | English |
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Subjects | Mathematical Sciences |
Journal Section | Mathematics |
Authors | |
Project Number | 2019/01 |
Publication Date | October 6, 2020 |
Published in Issue | Year 2020 |