In this paper Euclidean and hyperbolic discontinuous isometries* are discussed and compared. The graphic artist M.C. Escher (1898-1972) produced works which have for the structure points, lines, and angles, which repeat in the plane (Euclidean and...
“Was mathematics invented or discovered?” This is an age old question that has yet to be definitively answered. Some people believe that the human mind is the creator of mathematics, like a painter or poet, is a maker of patterns. [N, p....
