George E. Collins

George E. Collins (born January 10, 1928, Stuart, Iowa) is an American mathematician and computer scientist. He is the inventor of garbage collection by reference counting^{[pub 1][1]} and of the method of quantifier elimination by cylindrical algebraic decomposition.^{[pub 2][2]}

Selected publications

1. George E. Collins: A Method for Overlapping and Erasure of Lists, Commun. ACM, volume 3, number 12, 1960
2. George E. Collins: Quantifier elimination for the elementary theory of real closed fields by cylindrical algebraic decomposition, Second GI Conf. Automata Theory and Formal Languages, Springer LNCS 33, 1975

References

1. Jones, Richard; Lins, Rafael (1996), Garbage collection: algorithms for automatic dynamic memory management, Wiley, p. 40, ISBN 9780471941484, The first, though cumbersome and error-prone, reference counting technique was described by J. Gelertner, J.R. Hansen, and C.L. Gerberich [Gelernter et al, 1960] but the standard reference counting algorithm is due to George Collins [Collins, 1960].
2. Caviness, Bob F.; Johnson, Jeremy R., eds. (1998), Quantifier elimination and cylindrical algebraic decomposition, Springer, p. v, ISBN 9783211827949, A symposium on Quantifier Elimination and Cylindrical Algebraic Decomposition was held October 6–8, 1993 ... the symposium celebrated the 20th anniversary of George Collins' discovery of Cylindrical Algebraic Decomposition (CAD) as a method for Quantifier Elimination (QE) for the elementary theory of real closed fields (Collins 1973b), and was devoted to the many advances in this subject since Collins' discovery.