![]() This was the beginning of a very productive collaboration, culminating in the classic 1977 SIAM monograph. Strang proposed that David talk to Orszag to see if they had some common interests. Also at MIT at the time was a young researcher, Steven Orszag, who had begun some exciting work on spectral methods. David graduated with an MSc in 1969, under Shlomo Breuer, and with a PhD in 1972, as the first student of Saul Abarbanel and, indeed, as the very first PhD of the Department of Mathematics at Tel Aviv University.Īfter graduation, David went to MIT to continue his studies with Gilbert Strang. The gentleman, later identifying himself as Professor Posner and chair of the mathematics department, invited David to join that department to explore and develop his talents in this subject. As he walked through the university campus on his way home, an elderly gentleman approached him and asked about the reason for the sad face. He was sorely disappointed on learning that the admission deadline had passed, and his application therefore declined. It was therefore natural that, while serving as a sergeant in the Israeli army, David sought admission to Tel Aviv University to pursue studies in history. By his own account, he did well in mathematics in school, but his real love and interest were in literature and, even more, history. He enjoyed telling the story of how he had come to study mathematics by pure chance. He made numerous important contributions to the related areas of approximation theory and post-processing methods, compact finite difference methods, splitting methods, shock-capturing techniques, and absorbing boundary conditions.ĭavid was born in Tel Aviv, Israel, on November 14, 1944, and lived as normal a life as was possible during the formation of the state of Israel following the end of the Second World War. This work would shape the careers of a number of young researchers as the field quickly matured during the following decades. Orszag), Numerical Analysis of Spectral Methods: Theory and Applications, represented the first attempt to systematically analyze these relatively new methods. He is survived by his wife, Esty, their three children, Sigal, Zuki, and Adi, and four grandchildren.ĭavid was a central figure in the development of high-order and spectral methods for the solution of partial differential equations, with a particular interest in issues related to time-dependent problems and stability. On December 6, 2008, the worldwide community of computational mathematicians and scientists lost one of its most respected and original members when David Gottlieb, Ford Foundation Professor and Professor of Applied Mathematics at Brown University, passed away. ![]()
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