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undulating numbers

unicodeIn base 10, numbers with the form ababa

12121, 3737373

uniformUnicode is a computing industry standard for the consistent encoding and handling of text

uniform distributionIn the same manner

unigramStatistical distribution with constant probability

M = 1/(b - a)

unionn-gram of size one

unit circleCombine the elements of two or more sets

unit costA circle centered at the origin (0, 0) with a radius of 1

x^{2}+ y2 = 1

unit fractiona total expenditure incurred by a company to produce, store, and sell one unit of a particular product or service

Unit Cost = Total Money Value/Total Units (or Quantity)

unit vectorA fraction with 1 as the numerator

For fractions n/m, the unit fraction is 1/m

units of output depreciationA vector with a magnitude of one

[0, 1] or [1, 0]

unix timeDepreciation based on asset usage

unknownThe number of seconds since January 1, 1970

unknown numbera number or value we do not know

unordered partitionsAlso known as a variable

unsigned integerA partition is unordered when no distinction is made between subsets of the same size (the order of the subsets does not matter

upper boundan integer that can only be positive

upper quartileAny number greater than or equal to all elements in a set.

upsilonThe top 25% of data set values

utilityA letter of the greek alphabet used for math notation.

Υ υ

Preference for goods and services above money