nisse at lysator.liu.se (Niels Möller) writes: How do you define hensel square root with remainder? Given a and n, if there exists an x such that x^2 = a (mod B^n), that seems like the reasonable definition of the square root. But what if no such x exists; where should we put the "remainder" in the equation? I don't think a remainder is meaningful here. -- Torbjörn