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  2. Internal set theory - Wikipedia

    en.wikipedia.org/wiki/Internal_set_theory

    Internal set theory (IST) is a mathematical theory of sets developed by Edward Nelson that provides an axiomatic basis for a portion of the nonstandard analysis introduced by Abraham Robinson. Instead of adding new elements to the real numbers , Nelson's approach modifies the axiomatic foundations through syntactic enrichment.

  3. David Nelson (mathematician) - Wikipedia

    en.wikipedia.org/wiki/David_Nelson_(mathematician)

    David Nelson (born 1938) (also known as R. D. Nelson) is an English mathematician. He is a Chartered Mathematician and a Fellow of the Institute of Mathematics and its Applications . Nelson was educated at Calday Grange Grammar School, Cheshire, and won an open mathematical scholarship to Christ's College, Cambridge .

  4. Linear Operators (book) - Wikipedia

    en.wikipedia.org/wiki/Linear_Operators_(book)

    Linear Operators is a three-volume textbook on the theory of linear operators, written by Nelson Dunford and Jacob T. Schwartz.The three volumes are (I) General Theory; (II) Spectral Theory, Self Adjoint Operators in Hilbert Space; and (III) Spectral Operators.

  5. Edward Nelson - Wikipedia

    en.wikipedia.org/wiki/Edward_Nelson

    Edward Nelson (May 4, 1932 – September 10, 2014) was an American mathematician. He was professor in the Mathematics Department at Princeton University . He was known for his work on mathematical physics and mathematical logic .

  6. Hadwiger–Nelson problem - Wikipedia

    en.wikipedia.org/wiki/Hadwiger–Nelson_problem

    According to Jensen & Toft (1995), the problem was first formulated by Nelson in 1950, and first published by Gardner (1960). Hadwiger (1945) had earlier published a related result, showing that any cover of the plane by five congruent closed sets contains a unit distance in one of the sets, and he also mentioned the problem in a later paper (Hadwiger 1961).

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  8. Evelyn Nelson (mathematician) - Wikipedia

    en.wikipedia.org/wiki/Evelyn_Nelson_(mathematician)

    Nelson is the namesake, along with Cecilia Krieger, of the Krieger–Nelson Prize, which is awarded to a female mathematician in recognition of outstanding achievement. [2] The Department of Mathematics at McMaster University has a lecture series, "The Evelyn Nelson Lectures", held since 1991.

  9. 25 of the very best deals from Nordstrom's Half-Yearly Sale ...

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    One of the best post-Christmas sales we look forward to every year is Nordstrom's Half-Yearly Sale, which typically kicks off the day after Christmas and lasts for a couple of weeks.Ring in the ...