Mathematics and art while the De Stijl movement led by Theo van Doesburg and Piet Mondrian explicitly embraced geometrical forms. Mathematics has inspired textile arts such as quilting, knitting, cross-stitch, crochet, embroidery, weaving, Turkish and other carpet-making, as well as kilim. In Islamic art, symmetries are evident in forms as varied as Persian girih and Moroccan zellige tilework, Mughal jali pierced stone screens, and widespread muqarnas vaulting. Mathematics has directly influenced art with conceptual tools such as linear perspective, the analysis of symmetry, and mathematical objects such as polyhedra and the Möbius strip. Magnus Wenninger creates colourful stellated polyhedra, originally as models for
Pieter van der Kruk the Dutch Olympic Committee, and between 1998 and 2002 headed the Dutch antidoping organization NeCeDo (Nederlands Centrum voor Dopingvraagstukken) in Rotterdam. Later he worked as TV sports commentator with Eurosport. Pieter van der Kruk Pieter "Piet" van der Kruk (born 13 August 1941) is a retired Dutch heavyweight weightlifter and shot putter. He won five national weightlifting titles (1964, 1965, 1967–1969) and four shot put titles (1964, 1965, 1967 and 1969), and held the national shot put record from 1967 to 1976. He qualified for the 1968 Summer Olympics both as a shot putter and weightlifter; he chose to compete