CapitalUpsilon
 Usage
 \[CapitalUpsilon]
Notes
• Aliases:  U, Upsilon. • Greek letter. • Not commonly used. • Used in physics for  particles, and in the quantum theory of measurement. • See Section 1.10.1 and Section 3.10.3. • See also: \[CurlyCapitalUpsilon] , \[Upsilon] .
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