Volume 3,  Issue 4, 2002

Article 56

ON GENERALIZATIONS OF L. YANG'S INEQUALITY

CHANG-JIAN ZHAO AND LOKENATH DEBNATH

DEPARTMENT OF MATHEMATICS, 
SHANGHAI UNIVERSITY, 
SHANGHAI 200436, CHINA.
E-Mail: chjzhao@163.com

DEPARTMENT OF MATHEMATICS
UNIVERSITY OF TEXAS-PAN AMERICAN
EDINBURG, 
TEXAS 78539-2999, U.S.A
E-Mail: Debnathl@panam.edu 

Received 03 December, 2001; Accepted 02 June, 2002.
Communicated by: F. Qi


ABSTRACT.   A geometric inequality due to L. Yang involving cosine and sine functions is generalized.
Key words:
L. Yang's inequality, Theory of distribution of functional value, Jensen inequality.

2000 Mathematics Subject Classification:
26D15.


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