期刊名称:Electronic Colloquium on Computational Complexity
印刷版ISSN:1433-8092
出版年度:2016
卷号:2016
出版社:Universität Trier, Lehrstuhl für Theoretische Computer-Forschung
摘要:Although a simple counting argument shows the existence of Boolean functions of exponential circuit complexity, proving superlinear circuit lower bounds for explicit functions seems to be out of reach of the current techniques. There has been a (very slow) progress in proving linear lower bounds with the latest record of 3 1 86 n − o ( n ) . All known lower bounds are based on the so-called gate elimination technique. A typical gate elimination argument shows that it is possible to eliminate several gates from an optimal circuit by making one or several substitutions to the input variables and repeats this inductively. In this note we prove that this method cannot achieve linear bounds of cn beyond a certain constant c , where c depends only on the number of substitutions made at a single step of the induction.
关键词:circuit lower bounds ; gate elimination ; linear bounds