Mathematical folklore

In common mathematical parlance, a mathematical result is called folklore if it is an unpublished result with no clear originator, but which is well-circulated and believed to be true among the specialists. More specifically, folk mathematics, or mathematical folklore, is the body of theorems, definitions, proofs, facts or techniques that circulate among mathematicians by word of mouth, but have not yet appeared in print, either in books or in scholarly journals.[1][2] Knowledge of folklore is the coin of the realm of academic mathematics.

Quite important at times for researchers are folk theorems, which are results known, at least to experts in a field, and are considered to have established status, though not published in complete form.[1][2] Sometimes, these are only alluded to in the public literature. An example is a book of exercises, described on the back cover:

This book contains almost 350 exercises in the basics of ring theory. The problems form the "folklore" of ring theory, and the solutions are given in as much detail as possible.[3]

Another distinct category is well-knowable mathematics, a term introduced by John Conway.[4] These mathematical matters are known and factual, but not in active circulation in relation with current research (i.e., untrendy[1]). Both of these concepts are attempts to describe the actual context in which research work is done.

Some people, in particular non-mathematicians, use the term folk mathematics to refer to the informal mathematics studied in many ethno-cultural studies of mathematics. Although the term "mathematical folklore" can also be used within the mathematics circle to describe the various aspects of their esoteric culture and practices (e.g., slang, proverb, limerick, joke).[5]

Stories, sayings and jokes

Mathematical folklore can also refer to the unusual (and possibly apocryphal) stories or jokes involving mathematicians or mathematics that are told verbally in mathematics departments. Compilations include tales collected in G. H. Hardy's A Mathematician's Apology and (Krantz 2002); examples include:

See also

References

  1. "The Definitive Glossary of Higher Mathematical Jargon — Folklore". Math Vault. 2019-08-01. Retrieved 2019-11-30.
  2. "folklore in nLab". ncatlab.org. Retrieved 2019-11-30.
  3. Grigore Calugareau & Peter Hamburg (1998) Exercises in Basic Ring Theory, Kluwer,[ISBN 0792349180]
  4. J. W. S. Cassels (1976) "An embedding theorem for fields: Addendem", Bulletin of the Australian Mathematical Society 14: 479–80 doi:10.1017/S0004972700025442
  5. Renteln, Paul; Dundes, Alan. "Foolproof: A Sampling of Mathematical Folk Humor" (PDF). American Mathematical Society. Retrieved 2019-11-29.
  6. Weisstein, Eric W. "Theorem". mathworld.wolfram.com. Retrieved 2019-11-30.

5. MM Hoque and SS Mostafizur Rahman, Wari-Bateshwar, Banglapedia: The National Encyclopedia of Bangladesh, Asiatic Society of Bangladesh, Dhaka, Retrieved: 20 February 2012 6. Kamrul Hasan Khan (1 April 2007). "Wari-Bateswar reminds Ptolemy's 'Sounagoura'". The Daily Star. 7. Enamul Haque 2001. Excavation at Wari-Bateshwar: A Preliminary Study. Edited by Enamul Haque. Dhaka, The International Centre for Study of Bengal Art, 2001, ISBN 984-8140-02-6

Bibliography

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