摘要：Applying the method consisting of a combination of the Brouwer and the Kakutani fixed-point theorems to a discrete equation with a double singular structure, that is, to a discrete singular equation of which the denominator contains another discrete singular operator, we prove that the equation has a solution..
关键词：Positive solution ; Set-valued operator ; Discrete singular equation ; The Brouwer fixed-point theorem ; The Kakutani fixed-point theorem ;
