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 the SWAPO Youth League. He retained his parliamentary seat in the 2014 general elections and was subsequently appointed Deputy Minister for Industrialisation, Trade and SME Development. After a Cabinet reshuffle in February 2018 he swapped positions with Lucia Iipumbu and is since then Deputy Minister of National Planning. 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