ベルトランの仮説
1. Bertrand's postulateBertrand's postulate states that if n > 3 is an integer, then there always exists at least one prime number p with n < p < 2n − 2. A weaker but more elegant formulation is: for every n > 1 there is always at least one prime p such that n < p < 2n. This statement was first conjectured in 1845 by Joseph Bertrand (1822–1900). Bertrand himself verified his statement for all numbers in the interval [2, 3 × 10].
Read “Bertrand's postulate” on English Wikipedia
Read “ベルトランの仮説” on Japanese Wikipedia
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Read “Bertrand's postulate” on English Wikipedia
Read “ベルトランの仮説” on Japanese Wikipedia
Read “Bertrand's postulate” on DBpedia
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