Richard M. Friedberg

Richard M. Friedberg (born October 8, 1935), is a theoretical physicist who has contributed to a wide variety of problems in mathematics and physics. These include mathematical logic, number theory, solid state physics, general relativity,[1] particle physics, quantum optics, genome research,[2] and the foundations of quantum physics.[3]

Richard Friedberg
Born8 October 1935 (1935-10-08) (age 84)
New York City, New York, U.S.
Alma materHarvard University
AwardsWilliam Lowell Putnam Mathematical Competition (1956)
Scientific career
FieldsPhysicist
InstitutionsBarnard College
Columbia University
Doctoral advisorTsung-Dao Lee

Works of Richard Friedberg

Friedberg's most well-known work dates back to the mid-1950s. As an undergraduate at Harvard, he published several papers over a period of 2–3 years. The first paper introduced the priority method, a common technique in computability theory, in order to prove the existence of recursively enumerable sets with incomparable degrees of unsolvability. [4][5][6][7]

In 1968, Friedberg proved independently what became known as Bell’s inequality, not knowing that J. S. Bell had proved it a few years earlier. He showed it to the physicist and historian Max Jammer, who somehow managed to insert it into his book “The Conceptual Development of Quantum Mechanics”,[8] although the latter bears the publication date 1966. This caused Friedberg some embarrassment later when classmates at Harvard, knowing of the result only through Jammer’s book, supposed that Friedberg was the first discoverer. (A letter from Friedberg to Jammer dated May 1971 begins, “It was nice of you to remember what I showed you in 1968. I finally got around to writing it up in 1969, but just then I found out about Bell’s 1964 paper (Physics 1, 195) which had anticipated my ‘discovery’ by three years. So I did not publish.”) More recently, Friedberg worked on the foundations of quantum mechanics in collaboration with the late Pierre Hohenberg. [9]

Friedberg is also known for his love of music and poetry. He wrote poems in several letters [10] [11] [12] [13] to cognitive scientist and writer Douglas Hofstadter in 1989. The last letter contains two sonnets ”The Electromagnetic Spectrum” and "Fermions and Bosons". These letters also include critiques and analyses of topics in Metamagical Themas, a collection of articles that Hofstadter wrote for Scientific American during the early 1980s.

Friedberg wrote an informal book on number theory titled "An Adventurer's Guide to Number Theory".[14] In the book, he states, "The difference between the theory of numbers and arithmetic is like the difference between poetry and grammar."

Early life

Friedberg was born in Manhattan on Oct 8, 1935. His father, Charles K. Friedberg, was a renowned cardiologist whose book “Diseases of the Heart”, published by W.B. Saunders (1949, 1956, 1966), was translated into many languages and became the undisputed ”bible” for its thorough explication of physiologic mechanisms combined with its straightforward clinical advice to physicians, drawn from the author’s own practice. His mother, Gertrude Tonkonogy, wrote a play, “Three-Cornered Moon”, whose success on Broadway in 1933 was felt to have “rescued” a season in which the theatrical world was uncertain whether any play would draw audiences in the depth of the Great Depression.

Selected Published Works
  • "Two Recursively Enumerable Sets Not Recursive in Each Other", Richard Friedberg, Proc. Nat. Acad. Sci. vol. 43, p. 236 (1957) [communicated by K. Gödel]. doi:10.1073/pnas.43.2.236
  • "A criterion for completeness of degrees of unsolvability", Richard. M. Friedberg, Journal of Symbolic Logic, Volume 22, Issue 2 June 1957, pp. 159–160.
  • "A Learning Machine: Part I", R.M. Friedberg, IBM Journal of Research and Development (Volume: 2, Issue: 1, Jan. 1958).
  • "Three theorems on recursive enumeration. I. Decomposition. II. Maximal set. III. Enumeration without duplication", Richard M. Friedberg, Journal of Symbolic Logic, Volume 23, Issue 3 September 1958, pp. 309–316.
  • "Dual Trees and Resummation Theorems", R. Friedberg, J. Math. Phys. vol. 16, p 20 (1974). Bibcode: 1975JMP....16...20F
  • "The Electrostatics and Magnetostatics of a Conducting Disc", R. Friedberg, Am. J. Phys vol. 61, p. 1084 (1993).
  • "Path Integrals in Polar Variables with Spontaneously Broken Symmetry", R. Friedberg, J. Math Phys. vol. 36, p. 2675 (1995). doi:10.1063/1.531360
  • "Derivation of Regge’s Action from Einstein’s Theory of General Relativity", R. Friedberg and T. D. Lee, Nucl. Phys. B 242, 145 (1984).
  • "Frequency Shifts in Emission and Absorption by Resonant Systems of Two-Level Atoms", (with S. R. Hartmann and J. T. Manassah), Phys. Reports 7C, 101 (1973).
  • "Efficient Sorting of Genomic Permutation by Translocation, inversion and block interchange" S. Yancopoulos, O. Attie, Friedberg, Bioinformatics vol. 21, pp 3352–59 (2005). doi:10.1093/bioinformatics/bti535
gollark: You mean neutrino detectors
gollark: But I don't know if that's actually accurate since I lack the physics background to judge it and also forgot.
gollark: I vaguely remember reading that if you applied some things of general relativity to the motion of things in galaxies, you could just eliminate dark matter entirely.
gollark: Also, as far as I know there still isn't particularly good evidence of it.
gollark: Was it?

References
  1. “Derivation of Regge’s Action from Einstein’s Theory of General Relativity”, R. Friedberg and T. D. Lee, Nucl. Phys. B 242, 145 (1984).
  2. “Efficient Sorting of Genomic Permutation...” S. Yancopoulos, O. Attie, Friedberg, Bioinformatics vol. 21, pp 3352-59 (2005)
  3. “Compatible Quantum Theory”, R. Friedberg, P.C. Hohenberg, Rep. Prog. Phys. 77, 2014, 092001 - 092035 ; “What is Quantum Mechanics? A Minimal Formulation R. Friedberg, P. C. Hohenberg”, Published by Springer-Verlag 21 February 2018 by Springer-Verlag in Foundations of Physics, Feb 21, page 1 (2018)
  4. “Two Recursively Enumerable Sets Not Recursive in Each Other”, [solution of Post’s problem], Proc. Nat. Acad. Sci. vol. 43, p. 236 (1957) [communicated by Kurt Gödel].
  5. “A criterion for completeness of degrees of unsolvability", Richard. M. Friedberg, Journal of Symbolic Logic, Volume 22, Issue 2, June 1957, pp. 159-160
  6. “A Learning Machine: Part I”, R. M. Friedberg, IBM Journal of Research and Development (Volume: 2, Issue: 1, Jan. 1958).
  7. “Three theorems on recursive enumeration. I. Decomposition. II. Maximal set. III. Enumeration without duplication”, Richard M. Friedberg, Journal of Symbolic Logic, Volume 23, Issue 3 September 1958, pp. 309-316
  8. The Conceptual Development of Quantum Mechanics. New York: McGraw-Hill, 1966 2nd ed: New York: American Institute of Physics, 1989. ISBN 0-88318-617-9
  9. “Compatible Quantum Theory”, R. Friedberg, P.C. Hohenberg, Rep. Prog. Phys. 77, 2014, 092001 - 092035 ; “What is Quantum Mechanics? A Minimal Formulation R. Friedberg, P. C. Hohenberg”, Published by Springer-Verlag 21 February 2018 by Springer-Verlag in Foundations of Physics, Feb 21, page 1 (2018).
  10. http://physics.gmu.edu/~isatija/R2D2.pdf
  11. http://physics.gmu.edu/~isatija/R2D3.pdf
  12. http://physics.gmu.edu/~isatija/R2D4.pdf
  13. http://physics.gmu.edu/~isatija/R2D5.pdf
  14. "An Adventurer’s Guide to Number Theory", R. Friedberg. New York: McGraw-Hill, 1968; reissued by Dover Publications, 1994.
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