Math Glossary Letter Uundulating numbersnounIn base 10, numbers with the form ababa
12121, 3737373
unicodenounUnicode is a computing industry standard for the consistent encoding and handling of text
uniformnounIn the same manner
uniform distributionnounStatistical distribution with constant probability
M = 1/(b - a)
unigramnounn-gram of size one
unionnounCombine the elements of two or more sets
unit circlenounA circle centered at the origin (0, 0) with a radius of 1
x2 + y2 = 1
unit costnouna 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 fractionnounA fraction with 1 as the numerator
For fractions n/m, the unit fraction is 1/m
unit vectornounA vector with a magnitude of one
[0, 1] or [1, 0]
units of output depreciationnounDepreciation based on asset usage
unix timenounThe number of seconds since January 1, 1970
unknownnouna number or value we do not know
unknown numbernounAlso known as a variable
unordered partitionsnounA partition is unordered when no distinction is made between subsets of the same size (the order of the subsets does not matter
unsigned integernounan integer that can only be positive
upper boundnounAny number greater than or equal to all elements in a set.
upper quartilenounThe top 25% of data set values
upsilonnounA letter of the greek alphabet used for math notation.
Υ υ
utilitynounPreference for goods and services above money