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
Willem van der Hoeven of Theo Mommers as new general manager of NAC Breda, van der Hoeven transferred his interim management duties to the current general manager. In his role as chairman, van der Hoeven was responsible for relations with the KNVB, with the Eredivisie, security affairs and personnel affairs. At the end of season 2009/2010 it appeared, despite earlier denials by management and the chairman, that NAC had a debt of 3.2 million Euros. The crisis lead to the resignation of van der Hoeven as chairman. Van der Hoeven was replaced by Bas van Bavel. Willem van der Hoeven was also chairman of