DocumentationMathematicaThe Mathematica BookMathematica Reference GuideListing of Named Characters
CapitalDifferentialD
\[CapitalDifferentialD]
Alias: DD. Compound operator. can only be interpreted by default when it appears with or other integral operators. Used in mathematics to indicate a functional differential. See Section 3.10.3. See also: \[DifferentialD] , \[DoubleStruckD] .
\[CapitalDifferentialD]
Alias: 
DD
can only be interpreted by default when it appears with 
or other integral operators. 
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