Robert Clay Prim

Co-developer of Prim's algorithm for finding a minimum spanning tree in a weighted graph, Prim made foundational contributions to computer network design. An American mathematician and computer scientist, he was born in...

Edgar (Ted) Frank Codd

Inventor of the relational model for database management, Codd established the theoretical basis for relational databases while working for IBM. He made other valuable contributions to computer science, but the relational model,...

Paul Tseng

The first to establish the convergence of the affine scaling algorithm for linear programming in the presence of degeneracy, Tseng was recognized by his peers to be one of the leading optimization...

Russell Lincoln Ackoff

Recognized as the "Father of Operations Research" for helping establish one of the world's first Departments of Operations Research, Ackoff is also celebrated internationally as a pragmatic academic, systems thinker, and prolific...

Claude Elwood Shannon

Developer of Information Theory, the basis for the design of communication systems and networks, Shannon also noted the importance of Boolean theory for the design of logic circuits whilst still a student...

Lawrence (Larry) H. Landweber

Creator of THEORYNET, an electronic mail system serving over 100 researchers in computer science, Landweber is also best known for founding the Computer Science Network (CSNET) project in 1979, which later developed...

James T. Pendergrass

Instrumental in establishing the naval cryptologic service's pioneering program to develop electronic digital computers, Pendergrass shaped the early development of computing in the U.S. Navy. Born in Bala Cynwyd, PA, he earned...

Evelyn Boyd Granville

Part of the IBM team responsible for formulating orbit computations and computer procedures for NASA's Projects Vanguard and Mercury, Granville was also one of the first African-American women to receive a Ph.D....

Friedrich Ludwig Bauer

First to propose the widely used stack method of expression evaluation, Bauer patented the pushdown stack in 1957, a contribution that proved foundational to modern computing. He contributed to the definition of...

Vladimir Iosifovich Levenshtein

Best known for his contributions to error-correction theory and information theory, Levenshtein is sometimes called the father of edit distance and is known for the Levenshtein distance algorithm, which he developed in...

Robert Morris

Contributor to early versions of UNIX, Morris developed the math library, the program crypt, and the password encryption scheme used for user authentication. He was born in Boston, Massachusetts, and received a...

Leonard Max Adleman

Co-inventor of the RSA (Rivest-Shamir-Adleman) cryptosystem, Adleman is a theoretical computer scientist and professor of computer science and molecular biology at the University of Southern California. RSA is in widespread use in...

Amir Pnueli

Pioneer of temporal logic in computing science, Pnueli made a major breakthrough in the verification and certification of concurrent and reactive systems with his landmark 1977 paper "The Temporal Logic of Programs,"...

Mark Semenovich Pinsker

Known for his entropy theory of dynamical systems, which introduced the maximal partition with zero entropy, later known as Pinsker's partition, Pinsker studied stochastic processes under A. N. Kolmogorov in the 1950s,...

Muhammad ibn Musa al

Presenter of the first systematic solution of linear and quadratic equations in Arabic, al-Khwārizmī was a Persian mathematician, astronomer, and geographer—a scholar in the House of Wisdom in Baghdad whose life spanned...

Richard Wesley Hamming

Known for his work on numerical methods, automatic coding systems, and error-detecting and error-correcting codes, Hamming was an American mathematician whose work had many implications for computer science and telecommunications. Hamming's contributions...

William (Velvel) Morton Kahan

One of the foremost experts on floating-point computations, Kahan is recognized for his fundamental contributions to numerical analysis and has dedicated himself to "making the world safe for numerical computations." Among his...

Victor M. Glushkov

Founding father of information technology in the Soviet Union and one of the founders of Cybernetics, Glushkov made significant contributions to the theory of automata. Victor was born in Rostov-on-Don, Russian SFSR, in...

Augusta Ada King, Countess of Lovelace

Known as the "World's First Computer Programmer," Lovelace wrote notes on Charles Babbage's analytical engine that include what is recognized as the first algorithm intended to be processed by a machine. An...

Patrick Carl Fischer

His work on the mathematical foundations of database query languages became central to the databases now used by major web servers worldwide. Fischer was an American computer scientist and noted researcher in...