Jul 05, 2019 11:35:00

【訃】 A pioneering researcher in chaos theory, Dr. Mitchell Feigenbaum dies

It turned out that Dr.

Mitchel Jay Feigenbaum , who has made outstanding achievements in the field of chaos theory , including his own name, Feigenbaum Constant , died in New York on June 30, 2019. I was 74 years old.

The Rockefeller University »Mitchell Feigenbaum, physicist who pioneered chaos theory, has died
https://www.rockefeller.edu/news/26289-mitchell-feigenbaum-physicist-pioneered-chaos-theory-died/

Dr. Feygenbaum was born on December 19, 1944 in Philadelphia, Pennsylvania, USA and grew up in Brooklyn, New York. Dr. Feigenbaum, who was interested in radio equipment, wanted to be an electrician and aimed at a bachelor's degree in electrical engineering at City University of New York but also attracted to physics and turned into a physicist. He holds a Ph.D. in theoretical physics from the Massachusetts Institute of Technology (MIT). After working at Cornell University from 1970 to 1972 and at Virginia Institute of Technology from 1972 to 1974, he worked at the Los Alamos Institute . Research in Los Alamos leads to the later 'chaos theory'.

When Dr. Feigenbaum started his research, the word chaos theory had not been born yet. Scientists in the world, including Newton, have been working to solve the problem of “misalignment” between calculated and measured values of complex systems, such as the orbits of planets in the solar system. Even for phenomena occurring in the same system, it was a source of concern for scientists that a slight difference in the initial value may cause a large deviation in the final result.

Dr. Feigenbaum, who embarked on this problem, discovered that there is regularity even in the seemingly random numerical deviation, made a computational model, and mathematically proved this regularity, I also showed that there is a sex. Many examples of this universality have been found later, from electrical circuits to biological systems. The regularity discovered by Dr. Feigenbaum has been given the name 'Pejgenbaum constant', and Dr. Feigenbaum won the 1986 Physics Prize for the Wolf Prize , which is said to be second to Nobel Prize. did.

In addition to his research on chaos theory, Dr. Feigenbaum also uses software to correct the distortion of shape and scale that occurs when projecting a three-dimensional object like the earth onto a two-dimensional plane in mapping, as well as name labels. It was also known to co-develop a computer program that places it in thousands of cities and rivers in a few minutes, as well as a pricing tool called Numerix, for pricing financial derivatives and structured products .