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Vaughan Jones

Vaughan Jones is a mathematics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Vaughan Jones rather than just read about it. In short: Sir Vaughan Frederick Randal Jones (31 December 1952 – 6 September 2020) was a New Zealand mathematician known for his work on von Neumann algebras and knot polynomials. He was awarded a Fields Medal in 1990.

Vaughan Jones — main illustration
Vaughan Jones — illustration

Key takeaways

  • Vaughan Jones belongs to mathematics; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Vaughan Jones to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Vaughan Jones from memory before moving on to harder problems.

Reference excerpt

Sir Vaughan Frederick Randal Jones (31 December 1952 – 6 September 2020) was a New Zealand mathematician known for his work on von Neumann algebras and knot polynomials. He was awarded a Fields Medal in 1990.

Early life Jones was born in Gisborne, New Zealand, on 31 December 1952. He was brought up in Cambridge, New Zealand, where he attended St Peter's School. He subsequently transferred to Auckland Grammar School after winning the Gillies Scholarship, and graduated in 1969 from Auckland Grammar. He went on to complete his undergraduate studies at the University of Auckland, obtaining a BSc in 1972 and an MSc in 1973. For his graduate studies, he went to Switzerland where he completed his PhD at the University of Geneva in 1979. His thesis, titled Actions of finite groups on the hyperfinite II1 factor, was written under the supervision of André Haefliger, and won him the Vacheron Constantin Prize.

Career Jones moved to the United States in 1980. There, he taught at the University of California, Los Angeles (1980–1981), and the University of Pennsylvania (1981–1985), before being appointed as professor of mathematics at the University of California, Berkeley. His work on knot polynomials, with the discovery of what is now called the Jones polynomial, was from an unexpected direction with origins in the theory of von Neumann algebras, an area of analysis already much developed by Alain Connes. It led to the solution of a number of classical problems of knot theory, to increased interest in low-dimensional topology, and the development of quantum topology. Jones taught at Vanderbilt University as Stevenson Distinguished Professor of mathematics from 2011 until his death. He remained Professor Emeritus at University of California, Berkeley, where he had been on the faculty from 1985 to 2011 and was a Distinguished Alumni Professor at the University of Auckland. Jones was made an honorary vice-president for life of the International Guild of Knot Tyers in 1992. The Jones Medal, created by the Royal Society of New Zealand in 2010, is named after him.

Personal life Jones met his wife, Martha Myers, during a ski camp for foreign students while they were studying in Switzerland. She was there as a Fulbright scholar, and subsequently became an associate professor of medicine, health and society. Together, they have three children. Jones died on 6 September 2020 at age 67 from health complications resulting from a severe ear infection. Jones was a certified barista.

Honours and awards 1990 – awarded the Fields Medal 1990 – elected Fellow of the Royal Society 1991 – awarded the Rutherford Medal by the Royal Society of New Zealand 1991 – awarded the degree of Doctor of Science by the University of Auckland 1991 – elected Honorary Fellow of the Royal Society of New Zealand 1992 – elected to the Australian Academy of Science as a Corresponding Fellow 1992 – awarded a Miller Professorship at the University of California Berkeley 2002 – appointed Distinguished Companion of the New Zealand Order of Merit (DCNZM) in the 2002 Queen's Birthday and Golden Jubilee Honours, for services to mathematics 2009 – his DCNZM redesignated to a Knight Companion of the New Zealand Order of Merit in the 2009 Special Honours 2012 – elected a Fellow of the American Mathematical Society

Publications Jones, Vaughan F. R. (1980). "Actions of finite groups on the hyperfinite type II1 factor". Memoirs of the American Mathematical Society. doi:10.1090/memo/0237. Jones, Vaughan F. R. (1983). "Index for subfactors". Inventiones Mathematicae. 72 (1): 1–25. Bibcode:1983InMat..72....1J. doi:10.1007/BF01389127. MR 0696688. S2CID 121577421. Jones, Vaughan F. R. (1985). "A polynomial invariant for knots via von Neumann algebra". Bulletin of the American Mathematical Society. (N.S.). 12: 103–111. doi:10.1090/s0273-0979-1985-15304-2. MR 0766964. Jones, Vaughan F. R. (1987). "Hecke algebra representations of braid groups and link polynomials". Annals of Mathematics. (2). 126 (2): 335–388. doi:10.2307/1971403. JSTOR 1971403. MR 0908150. Goodman, Frederick M.; de la Harpe, Pierre; Jones, Vaughan F. R. (1989). Coxeter graphs and towers of algebras. Mathematical Sciences Research Institute Publications. Vol. 14. Springer-Verlag. doi:10.1007/978-1-4613-9641-3. ISBN 978-1-4613-9643-7. MR 0999799. Jones, Vaughan F. R. (1991). Subfactors and knots. CBMS Regional Conference Series in Mathematics. Vol. 80. Providence, RI: American Mathematical Society. doi:10.1090/cbms/080. ISBN 9780821807293. MR 1134131. Jones, Vaughan F. R.; Sunder, Viakalathur Shankar (1997). Introduction to subfactors. London Mathematical Society Lecture Note Series. Vol. 234. Cambridge: Cambridge University Press. doi:10.1017/CBO9780511566219. ISBN 0-521-58420-5. MR 1473221.

See also Aharonov–Jones–Landau algorithm Planar algebra Subfactor

References

External links Vaughan Jones on INSPIRE-HEP

O'Connor, John J.; Robertson, Edmund F., "Vaughan Jones", MacTutor History of Mathematics Archive, University of St Andrews Vaughan Jones at the Mathematics Genealogy Project Jones' home page Career profile page at the University of Auckland Joan S. Birman: The Work of Vaughan F. R. Jones in Ichirō Satake (ed.): Proceedings of the International Congress of Mathematicians, 21–29 August 1990, Kyoto, Japan, Springer, 1991 (Laudatio for Fields-Medal 1990; online Archived 11 September 2014 at the Wayback Machine)

Illustrations

Vaughan Jones illustration

Worked examples

Example 1 — a first encounter with Vaughan Jones

Start with the simplest possible case. Write down what Vaughan Jones claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In mathematics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Vaughan Jones before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Vaughan Jones ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Vaughan Jones

In research
Vaughan Jones appears in mathematics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Vaughan Jones in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Vaughan Jones is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1952 births, 2020 deaths, 20th-century New Zealand mathematicians, so understanding it makes those chapters shorter.
In everyday life
Look for Vaughan Jones outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Vaughan Jones in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Vaughan Jones means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Vaughan Jones out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Vaughan Jones in simple terms?

Sir Vaughan Frederick Randal Jones (31 December 1952 – 6 September 2020) was a New Zealand mathematician known for his work on von Neumann algebras and knot polynomials. He was awarded a Fields Medal in 1990.

Why does Vaughan Jones matter?

Because it connects several mathematics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Vaughan Jones?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Vaughan Jones.

Tags

  • 1952 births
  • 2020 deaths
  • 20th-century New Zealand mathematicians
  • 21st-century New Zealand mathematicians
  • Fellows of the American Mathematical Society
  • Fellows of the Australian Academy of Science
  • Fields Medalists
  • Honorary Fellows of the Royal Society of New Zealand
  • Knights Companion of the New Zealand Order of Merit
  • Mathematicians at the University of Pennsylvania
  • Members of the United States National Academy of Sciences
  • New Zealand expatriates in Switzerland

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