Shmuel Gal (; born 1940) is a

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, mathematical structure, structure, space, Mathematica ...

and professor of

statistics Statistics (from German language, German: ', "description of a State (polity), state, a country") is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data. In applying statistics to a s ...

at the

University of Haifa The University of Haifa (, ) is a public research university located on Mount Carmel in Haifa, Israel. Founded in 1963 as a branch of the Hebrew University of Jerusalem, the University of Haifa received full academic accreditation as an inde ...

in Israel. He devised the

Gal's accurate tables Gal's accurate tables is a method devised by Shmuel Gal to provide accurate values of special functions using a lookup table and interpolation. It is a fast and efficient method for generating values of functions like the exponential or the trigono ...

method for the computer evaluation of elementary functions. With Zvi Yehudai he developed in 1993 a new algorithm for

sorting Sorting refers to ordering data in an increasing or decreasing manner according to some linear relationship among the data items. # ordering: arranging items in a sequence ordered by some criterion; # categorizing: grouping items with similar p ...

which is used by IBM. Gal has solved the Princess and monster game and made several significant contributions to the area of

search games A search game is a two-person zero-sum game which takes place in a set called the search space. The searcher can choose any continuous trajectory subject to a maximal velocity constraint. It is always assumed that neither the searcher nor the hider ...

. He has been working on

rendezvous problem Rendezvous or rendez-vous may refer to: Arts and entertainment Film and television * The Rendezvous (1923 film), ''The Rendezvous'' (1923 film), a silent film adventure melodrama * Rendezvous (1930 film), ''Rendezvous'' (1930 film), a Ger ...

s with his collaborative colleagues Steve Alpern, Vic Baston, and John Howard.S. Gal and J. Howard (2005). Rendezvous-evasion search in two boxes, OPERATIONS RESEARCH. Gal received a Ph.D. in mathematics from the

Hebrew University of Jerusalem The Hebrew University of Jerusalem (HUJI; ) is an Israeli public university, public research university based in Jerusalem. Co-founded by Albert Einstein and Chaim Weizmann in July 1918, the public university officially opened on 1 April 1925. ...

. His thesis advisor was Aryeh Dvoretzky.

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* {{DEFAULTSORT:Gal, Shmuel Game theorists Hebrew University of Jerusalem alumni Israeli mathematicians Israeli operations researchers Academic staff of the University of Haifa Jewish scientists Israeli systems scientists Living people 1940 births