Drome numbers

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

In number theory, drome numbers are a class of four different types of hexadecimal numbers categorized by the order of their hexadecimal digits: plaindromes, nialpdromes, katadromes, and metadromes.[1]

Name Base-16 digit order

(hexadecimal)

plaindrome nondecreasing (increasing or staying the same)
nialpdrome nonincreasing (decreasing or staying the same)
katadrome strict descending
metadrome strict ascending

See also[edit]

References[edit]

  1. ^ Weisstein, Eric W. (2002). CRC Concise Encyclopedia of Mathematics (2nd ed.). CRC Press. ISBN 978-1420035223.