\[CurlyTheta] (Mathematica Character Name)

Unicode: 03D1. Aliases: Esc cq Esc, Esc cth Esc, Esc ctheta Esc. Greek letter. Used in TraditionalForm for EllipticTheta and RiemannSiegelTheta.

\[Dagger] (Mathematica Character Name)

Unicode: 2020. Alias: Esc dg Esc. Letter-like form. x^† is by default interpreted as SuperDagger[x]. Not the same as \[ConjugateTranspose].

\[Digamma] (Mathematica Character Name)

Unicode: 03DD. Aliases: Esc di Esc, Esc digamma Esc. Special Greek letter. Analogous to English w. Sometimes used to denote PolyGamma[x].

\[DotlessI] (Mathematica Character Name)

Unicode: 0131. Letter. Used when an i will have an overscript on top. May or may not match the ordinary i from the text font.

\[DoubledPi] (Mathematica Character Name)

Unicode: F749. Alias: Esc pp Esc. Letter-like form. Not by default assigned any interpretation. Not the same as \[Pi].

\[DoubleLeftArrow] (Mathematica Character Name)

Unicode: 21D0. Alias: Esc ␣<= Esc. Infix arrow operator. x ⇐ y is by default interpreted as DoubleLeftArrow[x,y]. Extensible character. Esc <= Esc is the alias for ...

\[DoubleLeftRightArrow] (Mathematica Character Name)

Unicode: 21D4. Alias: Esc <=> Esc. Infix arrow operator. x ⇔ y is by default interpreted as DoubleLeftRightArrow[x,y]. Used in mathematics to indicate logical equivalence. ...

\[EmptySmallCircle] (Mathematica Character Name)

Unicode: 25E6. Alias: Esc esci Esc. Letter-like form. Not the same as the infix operator \[SmallCircle]. Used as an overscript to add ring diacritical marks.

\[EmptySquare] (Mathematica Character Name)

Unicode: 25A1. Alias: Esc esq Esc. Letter-like form. Not the same as the operator \[Square]. Not the same as \[Placeholder].

\[EmptyUpTriangle] (Mathematica Character Name)

Unicode: 25B3. Letter-like form. Used in geometry to indicate a triangle, as in the symbol △ABC. Not the same as \[CapitalDelta].