On convergence of certain cosine sums with twice quasi semi-convex coefficients.
Braha, N.L. (2010)
APPS. Applied Sciences
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Braha, N.L. (2010)
APPS. Applied Sciences
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Braha, Naim L. (2009)
International Journal of Open Problems in Computer Science and Mathematics. IJOPCM
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Khriptun, M.D. (2001)
Sibirskij Matematicheskij Zhurnal
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Krasniqi, Xhevat Z. (2009)
International Journal of Open Problems in Computer Science and Mathematics. IJOPCM
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Stamatis Koumandos (1996)
Colloquium Mathematicae
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Xhevat Z. Krasniqi (2013)
Archivum Mathematicum
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In this paper we introduce some new modified cosine sums and then using these sums we study -convergence of trigonometric cosine series.
Per Sjölin (2004)
Collectanea Mathematica
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Generalized conjugate partial sums of Fourier series are used to find jumps of functions. The rate of convergence is studied and sharp results are obtained.
Jarmila Novotná (1983)
Časopis pro pěstování matematiky
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