Preface

This issue of Numerical Algebra, Control and Optimization is dedicated to Professor George Leitmann on the occasion of his 88th birthday. George Leitmann was born in 1925 in Vienna, Austria. He migrated to USA and received his BA and MS in physics in 1949 and 1950 from Columbia University. During the following seven years at the US Naval Ordnance Test Station, China Lake, California, he worked mostly on rocket trajectory optimization and testing. During this period he also completed a PhD in Engineering Science at the University of California at Berkeley. He joined the University of California at Berkeley in 1957, and became Professor of Engineering Science in 1963 until his retirement in 1991. Since then, he has been Professor Emeritus of Engineering Science. He has been Professor in the Graduate School since 1995.   

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