About ‘Under and Over | Permutation | ID=11 | V=19 | 4xO | P #01-W’ by Gerhard Haberern
Permutation with red, green, blue and yellow. Centre Black (D) or White (W).
Four mutually overlapping colour strips each form a rectangular O.
ID=11, Version=19, Permutation #01
Each stripe can take one of 4 colors. For reasons of symmetry, there are then 6 possible arrangements for each background.
With centre black or…
Colors
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I deal with constructive graphics.
I am probably one of many unknown pioneers of computer graphics. Graphics with a "ph", I insist.
Already at school my student work was constructive. The work afterwards was mainly with ink, ruler and compass. Only for a short time I had also constructed with colour. Later only with ink, in black and white.
Since my first programming course in summer 1975 - shortly after I started my physics studies -…