\[Aleph] (Mathematica Character Name)

Unicode: 2135. Alias: Esc al Esc. Hebrew letter. Sometimes called alef. Used in pure mathematics to denote transfinite cardinals.

\[AlignmentMarker] (Mathematica Character Name)

Unicode: F760. Alias: Esc am Esc. Letter-like form. Invisible by default on display. Used as a marker to indicate, for example, how entries in a GridBox column should be ...

\[Alpha] (Mathematica Character Name)

Unicode: 03B1. Aliases: Esc a Esc, Esc alpha Esc. Greek letter. Not the same as \[Proportional].

\[Angstrom] (Mathematica Character Name)

Unicode: 212B. Alias: Esc Ang Esc. Letter-like form. Unit corresponding to 10^-10 meters. Not the same as the letter \[CapitalARing].

\[CapitalARing] (Mathematica Character Name)

Unicode: 00C5. Alias: Esc Ao Esc. Letter. Included in ISO Latin-1. Not the same as \[Angstrom].

\[CapitalChi] (Mathematica Character Name)

Unicode: 03A7. Aliases: Esc Ch Esc, Esc Chi Esc, Esc C Esc. Greek letter. Not the same as English X.

\[CapitalDelta] (Mathematica Character Name)

Unicode: 0394. Aliases: Esc D Esc, Esc Delta Esc. Greek letter. Not the same as \[EmptyUpTriangle] or \[DifferenceDelta]. Sometimes used in mathematics to denote Laplacian.

\[CapitalDifferentialD] (Mathematica Character Name)

Unicode: F74B. Alias: Esc DD Esc. Compound operator.  can only be interpreted by default when it appears with ∫ or other integral operators. Used in mathematics to indicate ...

\[CapitalOmega] (Mathematica Character Name)

Unicode: 03A9. Aliases: Esc O Esc, Esc Omega Esc, Esc W Esc. Greek letter. Used as the symbol for ohms.

\[CapitalPi] (Mathematica Character Name)

Unicode: 03A0. Aliases: Esc P Esc, Esc Pi Esc. Greek letter. Used in TraditionalForm for EllipticPi. Not the same as \[Product].