MATH GLOSSARY
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Title  Description  

Uncountable  In human terms, Uncountable means too many to practically count or enumerate. In math, an infinite function without a onetoone correspondence to natural numbers. 

Uniform  Constant and unchanging; fixed. 

Union  The Union of two or more sets is the set of elements from all the sets. The Union of sets A and B is literally the set "A and B." 

Unit Circle  A Circle of radius one centered at the origin is termed the Unit Circle. 

Unit Vector  A vector of length one directed along one of the coordinate axes. 

Upper Bound  The greatest permissible value of a function may be termed its Upper Bound. 

Upper Quartile  Also the high quartile, the 75th percentile. 

Upper Quintile  Also high quintile, the 80th percentile. 

Upsilon  Upsilon is the 20th letter of the Greek alphabet. 
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