Turán‐type inequalities for the supertrigonometric functions

Author(s):  
Lu‐Lu Geng ◽  
Xiao‐Jun Yang ◽  
Jian‐Gen Liu
2010 ◽  
Vol 13 (2) ◽  
pp. 217-224 ◽  
Author(s):  
K. K. Dewan ◽  
Arty Ahuja ◽  
Sunil Hans

2016 ◽  
Vol 3 (1) ◽  
pp. 1130678
Author(s):  
Piyush Kumar Bhandari ◽  
S.K. Bissu ◽  
Regina S. Burachik

2017 ◽  
Vol 24 (1) ◽  
pp. 48-58
Author(s):  
Meryam Ben Said ◽  
Khaled Mehrez ◽  
Jamel El Kamel

2010 ◽  
Vol 82 (2) ◽  
pp. 254-264 ◽  
Author(s):  
ÁRPÁD BARICZ

AbstractIn this paper our aim is to deduce some sharp Turán type inequalities for modified Bessel functions of the first and second kinds. Our proofs are based on explicit formulas for the Turánians of the modified Bessel functions of the first and second kinds and on a formula which is related to the infinite divisibility of the Student t-distribution.


Author(s):  
C. M. Joshi ◽  
S. K. Bissu

AbstractTwo-sided inequalties for the ratio of modified Bessel functions of first kind are given, which provide sharper upper and lower bounds than had been known earlier. Wronskian type inequalities for Bessel functions are proved, and in the sequel alternative proofs of Turan-type inequalities for Bessel and modified Bessel functions are also discussed. These then lead to a two-sided inequality for Bessel functions. Also incorporated in the discussion is an inequality for the ratio of two Bessel functions for 0 < x < 1. Verifications of these inequalities are pointed out numerically.


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