Narumi Katayama Index Calculator

degree product invariant

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About Narumi Katayama Index Calculator

A Narumi-Katayama index calculator computing NK(G) = Π d(v) — the product of all vertex degrees. Narumi-Katayama (1984). Multiplicative analogue of M₁. log(NK) = Σ log d(v). Relates to molecular complexity. NK = 0 iff G has isolated vertex. Client-side.

Narumi Katayama Index Calculator Features

  • NK(G)
  • Π d(v)
  • Multiplicative
  • log NK
  • Common graphs

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