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  2. Partition function (number theory) - Wikipedia

    en.wikipedia.org/wiki/Partition_function_(number...

    This asymptotic formula was first obtained by G. H. Hardy and Ramanujan in 1918 and independently by J. V. Uspensky in 1920. Considering p ( 1000 ) {\displaystyle p(1000)} , the asymptotic formula gives about 2.4402 × 10 31 {\displaystyle 2.4402\times 10^{31}} , reasonably close to the exact answer given above (1.415% larger than the true value).

  3. Integer partition - Wikipedia

    en.wikipedia.org/wiki/Integer_partition

    Srinivasa Ramanujan discovered that the partition function has nontrivial patterns in modular arithmetic, now known as Ramanujan's congruences. For instance, whenever the decimal representation of n {\displaystyle n} ends in the digit 4 or 9, the number of partitions of n {\displaystyle n} will be divisible by 5.

  4. Ramanujan's congruences - Wikipedia

    en.wikipedia.org/wiki/Ramanujan's_congruences

    After Ramanujan died in 1920, G. H. Hardy extracted ... It is seen to have dimension 0 only in the cases where ℓ = 5, 7 or 11 and since the partition function ...

  5. Hardy–Ramanujan theorem - Wikipedia

    en.wikipedia.org/wiki/HardyRamanujan_theorem

    In mathematics, the Hardy–Ramanujan theorem, proved by Ramanujan and checked by Hardy [1] states that the normal order of the number () of distinct prime factors of a number is ⁡ ⁡. Roughly speaking, this means that most numbers have about this number of distinct prime factors.

  6. Hardy–Ramanujan–Littlewood circle method - Wikipedia

    en.wikipedia.org/wiki/HardyRamanujan...

    The initial idea is usually attributed to the work of Hardy with Srinivasa Ramanujan a few years earlier, in 1916 and 1917, on the asymptotics of the partition function.It was taken up by many other researchers, including Harold Davenport and I. M. Vinogradov, who modified the formulation slightly (moving from complex analysis to exponential sums), without changing the broad lines.

  7. Crank of a partition - Wikipedia

    en.wikipedia.org/wiki/Crank_of_a_partition

    Let n be a non-negative integer and let p(n) denote the number of partitions of n (p(0) is defined to be 1).Srinivasa Ramanujan in a paper [3] published in 1918 stated and proved the following congruences for the partition function p(n), since known as Ramanujan congruences.

  8. Taxicab number - Wikipedia

    en.wikipedia.org/wiki/Taxicab_number

    Srinivasa Ramanujan (picture) was bedridden when he developed the idea of taxicab numbers, according to an anecdote from G. H. Hardy.. In mathematics, the nth taxicab number, typically denoted Ta(n) or Taxicab(n), is defined as the smallest integer that can be expressed as a sum of two positive integer cubes in n distinct ways. [1]

  9. G. H. Hardy - Wikipedia

    en.wikipedia.org/wiki/G._H._Hardy

    However, aside from formulating the Hardy–Weinberg principle in population genetics, his famous work on integer partitions with his collaborator Ramanujan, known as the Hardy–Ramanujan asymptotic formula, has been widely applied in physics to find quantum partition functions of atomic nuclei (first used by Niels Bohr) and to derive ...