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Mathematica > Notebooks and Documents > Special Characters > Greek Letters >
Variant Letters
In catering to the fine points of mathematical typesetting and notational clarity, Mathematica provides a variety of special variant forms of letters.
Mathematica Notation and Doubled Letters
ImaginaryI \[ImaginaryI] — special form of i representing (entered as Esc ii Esc)
ConstantC \[ConstantC]  ▪ DifferentialD \[DifferentialD]  ▪ ExponentialE \[ExponentialE]  ▪ ImaginaryJ \[ImaginaryJ]
DoubledGamma \[DoubledGamma]  ▪ DoubledPi \[DoubledPi]
    
Special Letter-Based Forms
µ \[Micro]  ▪ Angstrom \[Angstrom]  ▪ HBar \[HBar]  ▪ WeierstrassP \[WeierstrassP]
    
Variant Greek Letters
CurlyEpsilon \[CurlyEpsilon]  ▪ CurlyTheta \[CurlyTheta]  ▪ CurlyKappa \[CurlyKappa]  ▪ CurlyPi \[CurlyPi]  ▪ CurlyRho \[CurlyRho]  ▪ FinalSigma \[FinalSigma]  ▪ CurlyPhi \[CurlyPhi]  ▪ CurlyCapitalUpsilon \[CurlyCapitalUpsilon]
    
Dotless Letters
DotlessI \[DotlessI] — dotless i, used for unit vectors with hats, etc.
\[DotlessJ]  ▪ \[ScriptDotlessI]  ▪ \[ScriptDotlessJ]
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