scholarly journals Quasi-Concave Functions and Greedy Algorithms

10.5772/6340 ◽  
2008 ◽  
Author(s):  
Yulia Kempner ◽  
Vadim E. ◽  
Ilya Muchnik
2020 ◽  
Vol 84 (11) ◽  
pp. 1335-1340
Author(s):  
P. Kasprzak ◽  
K. Kazimierczuk ◽  
A. L. Shchukina
Keyword(s):  

Filomat ◽  
2017 ◽  
Vol 31 (11) ◽  
pp. 3593-3597
Author(s):  
Ravindra Bisht

Combining the approaches of functionals associated with h-concave functions and fixed point techniques, we study the existence and uniqueness of a solution for a class of nonlinear integral equation: x(t) = g1(t)-g2(t) + ? ?t,0 V1(t,s)h1(s,x(s))ds + ? ?T,0 V2(t,s)h2(s,x(s))ds; where C([0,T];R) denotes the space of all continuous functions on [0,T] equipped with the uniform metric and t?[0,T], ?,? are real numbers, g1, g2 ? C([0, T],R) and V1(t,s), V2(t,s), h1(t,s), h2(t,s) are continuous real-valued functions in [0,T]xR.


2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Slavko Simić ◽  
Bandar Bin-Mohsin

AbstractIn this article we give two possible generalizations of the Hermite–Hadamard integral inequality for the class of twice differentiable functions, where the convexity property of the target function is not assumed in advance. They represent a refinement of this inequality in the case of convex/concave functions with numerous applications.


2021 ◽  
Vol 182 ◽  
pp. 105465
Author(s):  
Sherry Sarkar ◽  
Alexander Xue ◽  
Pablo Soberón

COMBINATORICA ◽  
1998 ◽  
Vol 18 (1) ◽  
pp. 85-99 ◽  
Author(s):  
Jeff Kahn ◽  
Yang Yu
Keyword(s):  

1973 ◽  
Vol 21 (1) ◽  
pp. 305-313 ◽  
Author(s):  
W. A. Thompson ◽  
Darrel W. Parke
Keyword(s):  

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