关键词: Applied mathematics 、 Point (geometry) 、 Image (mathematics) 、 Function (mathematics) 、 Time space 、 Mathematical analysis 、 Mathematics
摘要: We provide rigorous time-space tradeoffs for inverting any function. Given a function f, we give time space tradeoff of TS2 = N3q(f), where q(f) is the probability that two random elements are mapped to same image under f. also more general tradeoff, TS3 N3, can invert at point.