An angel theorem for triangulations of the plane

نویسنده

  • Johan Wästlund
چکیده

Recently the so called angel problem was solved independently by four authors. We establish an analogous theorem for triangulations of the plane and derive a solution to the original angel problem from this theorem. Compared to earlier solutions, our approach gives a simpler proof as well as a weaker winning angel. We show that an angel moving from the middle square to any other square of a 3 by 5 rectangle is winning.

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تاریخ انتشار 2007