\[Chi] (Mathematica Character Name)

Unicode: 03C7. Aliases: Esc ch Esc, Esc chi Esc, Esc c Esc. Greek letter.

\[ClockwiseContourIntegral] (Mathematica Character Name)

Unicode: 2232. Alias: Esc ccint Esc. Compound operator. ∲ f x is by default interpreted as ClockwiseContourIntegral[f,x].

\[CloverLeaf] (Mathematica Character Name)

Unicode: 2318. Alias: Esc cl Esc. Letter-like form. Used on Macintosh and other computers to indicate command keys.

\[CommandKey] (Mathematica Character Name)

Unicode: F76A. Alias: Esc cmd Esc. Letter-like form. Representation of the Cmd or Alt key on a keyboard.

\[ContourIntegral] (Mathematica Character Name)

Unicode: 222E. Alias: Esc cint Esc. Compound operator. ∮ f x is by default interpreted as ContourIntegral[f,x].

\[ControlKey] (Mathematica Character Name)

Unicode: F763. Alias: Esc ctrl Esc. Letter-like form. Representation of the Ctrl key on a keyboard.

\[Cup] (Mathematica Character Name)

Unicode: 2323. Infix operator. x ⌣ y is by default interpreted as Cup[x,y]. Used in pure mathematics to mean cup product.

\[CurlyCapitalUpsilon] (Mathematica Character Name)

Unicode: 03D2. Aliases: Esc cU Esc, Esc cUpsilon Esc. Greek letter. Not commonly used. Used in astronomy for mass to light ratio.

\[CurlyKappa] (Mathematica Character Name)

Unicode: 03F0. Aliases: Esc ck Esc, Esc ckappa Esc. Greek letter.

\[CurlyPi] (Mathematica Character Name)

Unicode: 03D6. Aliases: Esc cp Esc, Esc cpi Esc. Greek letter. Not commonly used, except in astronomy.