Results 141 to 150 of about 18,585 (194)

On a Trigonometric Inequality of Szegő

Analysis Mathematica, 2021
Inspired by Fejér's work on univalent functions, \textit{G. Szegő} [Duke Math. J. 8, 559--564 (1941; Zbl 0060.20702)] proved an important trigonometric inequality. The authors extend the domain of validity of that inequality. An application is given as well.
Alzer, H., Kwong, M. K.
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Some Trigonometric Inequalities

1989
The paper includes many trigonometric inequalities for the real numbers A, B, C which satisfy the condition \(A+B+C=p,\) where p is a natural number. The first part consists of asymmetric trigonometric inequalities, the second deals with some trigonometric identities which play an important role in proving inequalities.
Mitrinović, Dragoslav S.   +2 more
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Inequalities for Trigonometric Sums

2012
We give a survey of recent results on positive trigonometric sums. Far-reaching extensions and generalizations of classical results are presented. We provide new proofs as well as additional remarks and comments. We also present several other sharp inequalities for trigonometric sums of various types.
Koumandos, S., Koumandos, S.
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