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
Piet van der Walt Piet van der Walt Piet Jacobus van der Walt (born 14 January 1966 in Okahandja) is a Namibian businessperson and politician who has been the Deputy Minister of National Planning since 2018. Van der Walt grew up in Okahandja and went to primary school there. His secondary school was the Higher Technical School in Windhoek. He became a diesel mechanic by profession, graduating in 1989 from the Windhoek Technical College. He also holds an engineering diploma in mechanical drawing and machines and properties of metals. Commenting on his alleged service for "Koevoet", the counter-insurgency branch of the South West African