Wow. I haven't logged onto AI in ages and just randomly stumbled across this post.
Hello, Tonton and all!
In the 1930s, Facism in Italy made life impossible for Escher and his family, so they moved to Switzerland. In 1936, Escher embarked on an important journey to the Alhambra in Granada, Spain. The Moorish tilings he saw there fascinated him, and some time after his visit he read Pólya's 1924 paper on plane symmetry groups.
Escher understood the 17 plane symmetry groups described in Pólya's paper, even though he didn't understand the abstract concept of the groups discussed in the paper. Between 1936 and 1942 Escher produced 43 colored drawings with a wide variety of symmetry types while working on possible periodic tilings. He adopted a highly mathematical approach with a systematic study using a notation which he invented himself.
In 1941, Escher returned to the Netherlands, after spending a while in Belgium. His fame slowly spread, and during the 1950s, articles on his work appeared. His works began to be displayed in science museums rather than art galleries.
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