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Bill Gosper

Nationality  American
Occupation  Programmer

Name  Bill Gosper
Role  Mathematician
Bill Gosper gosperorgimagesgosperamjpg
Alma mater  Massachusetts Institute of Technology
Education  Massachusetts Institute of Technology

Bill gosper pt1 on life and macsyma


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Ralph William Gosper, Jr. (born April 26, 1943), known as Bill Gosper, is an American mathematician and programmer. Along with Richard Greenblatt, he may be considered to have founded the hacker community, and he holds a place of pride in the Lisp community.

Bill Gosper Bill Gosper Wikipedia

Bill gosper pt2 on life and macsyma


Becoming a hacker

In high school, Gosper was interested in model rockets until one of his friends was injured in a rocketry accident and contracted a fatal brain infection. Gosper enrolled in MIT in 1961, and he received his bachelor's degree in mathematics from MIT in 1965 despite becoming disaffected with the mathematics department because of their anti-computer attitude.

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In his second year at MIT, Gosper took a programming course from John McCarthy and became affiliated with the MIT AI Lab.

His contributions to computational mathematics include HAKMEM and the MIT Maclisp system. He made major contributions to Macsyma, Project MAC's computer algebra system. Gosper later worked with Symbolics and Macsyma, Inc. on commercial versions of Macsyma.

In 1974, he moved to Stanford University, where he lectured and worked with Donald Knuth.

Since that time, he has worked at or consulted for Xerox PARC, Symbolics, Wolfram Research, the Lawrence Livermore Laboratory, and Macsyma Inc.

Game of life

He became intensely interested in the Game of Life shortly after John Horton Conway had proposed it. Conway conjectured the existence of infinitely growing patterns, and offered a reward for an example. Gosper was the first to find such a pattern, the glider gun, and won the prize. Gosper was also the originator of the hashlife algorithm that can speed up the computation of Life patterns by many orders of magnitude.

Packing problems

Gosper has created numerous packing problem puzzles, such as "Twubblesome Twelve".

Symbolic computation

Gosper was the first person to realize the possibilities of symbolic computation on a computer as a mathematics research tool, whereas computer methods were previously limited to purely numerical methods. In particular, this research resulted in his work on continued fraction representations of real numbers, and he developed Gosper's algorithm for finding closed form hypergeometric identities.

Gosper briefly held the world record for computing the most digits of pi with 17 million digits. See chronology of computation of π.

References

Bill Gosper Wikipedia


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