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Richard Courant From Wikipedia, the free encyclopedia Jump to navigation Jump to search German American mathematician Richard Courant Born ( 1888-01-08 ) January 8, 1888 Lublinitz , German Empire (now Lubliniec , Poland ) Died January 27, 1972 (1972-01-27) (aged 84) New Rochelle, New York , US Citizenship Germany USA Alma mater University of Göttingen Known for Courant number Courant minimax principle Courant–Friedrichs–Lewy condition Scientific career Fields Mathematics Institutions University of Göttingen University of Münster University of Cambridge New York University Thesis On the application of Dirichlet's principle to the problems of conformal mapping   (1910) Doctoral advisor David Hilbert Doctoral students Leifur Ásgeirsson Herbert Busemann William Feller Kurt Friedrichs Harold Grad Fritz John Joseph Keller Edgar Krahn Martin Kruskal Anneli Lax Hans Lewy Otto Neugebauer Franz Rellich R...

Help Category:Cardiovascular system From Wikipedia, the free encyclopedia Jump to navigation Jump to search The cardiovascular system incorporates the heart blood vessels and lymphatic vessels . The main purpose is to maintain adequate blood circulation and hence the distribution of nutrients to tissues and the delivery of metabolic wastes to excretory / urinary organs. The endocrine and immune systems also use the blood circulation as conduits for hormones , immune cells , cytokines and other chemical messengers that work at distant sites in the body. The main article for this category is Cardiovascular system . Wikimedia Commons has media related to Cardiovascular system . Subcategories This category has the following 7 subcategories, out of 7 total. A Angiology ‎ (8 C, 89 P) C Cardiology ‎ (10 C, 165 P) Cardiovascular diseases ‎ (7 C, 48 P) Cardiovascular ph...