As an undergraduate at the University of Chile, Bernardo Subercaseaux took a dim view of using computers to do math. It seemed antithetical to real intellectual discovery. “There’s some instinct or ...

Have you ever tried to do the brainteaser below, where you have to connect the dots to make the outline of a house in one continuous stroke without going back over your lines? Or perhaps you've ...

This is a preview. Log in through your library . Abstract Let G be a graph and let S = (s₁, s₂,...,sk) be a non-decreasing sequence of positive integers. An S-packing coloring of G is a mapping c : ...