Generalization of Levinson's inequality (CROSBI ID 224273)
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Podaci o odgovornosti
Baloch, Imran Abbas ; Pečarić, Josip ; Praljak, Marjan
engleski
Generalization of Levinson's inequality
Mercer gave a generalization of Levinson’s inequality that replaces the assumption of symmetry of the two sequences with a weaker assumptions of equality of variances. Witkowski further loosened this assumption and extended the result to the class of 3-convex functions. We generalize these results to a newly defined, larger class of functions. We also prove the converse in case the function is continuous. In particular, we show that if Levinson’s inequality holds under Mercer’s assumptions, then the function is 3-convex.
Levinson’s inequality; 3-convex functions; divided differences
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