@article{Pakgalb2022, 
author = {Golnaz Pakgalb and Mohammad Jahangiri Rad and Ali Salimi Shamloo and Majid Derafshpour},
title = {Existence and uniqueness of a positive solutions for the product of operators},
year = {2022},
journal = {AIMS Mathematics},
volume = {7},
number = {10},
pages = {18853-18869},
keywords = {fixed point, product of operator, quadratic integral equation, positive solution, concave operator},
url = {https://www.sciopen.com/article/10.3934/math.20221038},
doi = {10.3934/math.20221038},
abstract = {In this paper, we prove the existence of a positive solution for some equations involving multiplication of concave (possibly nonlinear) operators. Also, we provide a successively sequence to approximate the solution for such equations. This kind of the solution is necessary for quadratic differential and integral equations.}
}