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Harmonic number (disambiguation)

Topics referred to by the same term From Wikipedia, the free encyclopedia

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In number theory, the harmonic numbers are the sums of the inverses of integers, forming the harmonic series. Harmonic number may also refer to:

  • Harmonic, a periodic wave with a frequency that is an integral multiple of the frequency of another wave
  • Harmonic divisor numbers, also called Ore numbers or Ore's harmonic numbers, positive integers whose divisors have an integral harmonic mean
  • 3-smooth numbers, numbers whose only prime factors are 2 and 3
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