p-adic ultrametric

p-adic ultrametric (plural p-adic ultrametrics)

1. (number theory) The ultrametric with prime number p as parameter defined as ${\displaystyle d_{p}(x,y)=|x-y|_{p}}$; i.e., such that the distance between two rational numbers is equal to the p-adic absolute value of the difference between those two numbers.[1]
   • 2017 September 15, Branko Dragovich, Andrei Yu. Khrennikov, Nataša Ž. Mišić, “Ultrametrics in the genetic code and the genome”, in Applied Mathematics and Computation, volume 309, →DOI, pages 350–358:

     On p-adic ultrametrics in the genome / In previous section we demonstrated that codons and amino acids are elements of some p-adic ultrametric spaces.

• ultrametric

• p-adic number