\[NotSucceedsSlantEqual] (Mathematica Character Name)

Unicode: 22E1. Infix ordering operator. x ⋡ y is by default interpreted as NotSucceedsSlantEqual[x,y].

\[NotSucceedsTilde] (Mathematica Character Name)

Unicode: 22E9. Infix ordering operator. x ⋩ y is by default interpreted as NotSucceedsTilde[x,y].

\[NotSupersetEqual] (Mathematica Character Name)

Unicode: 2289. Alias: Esc !sup= Esc. Infix set relation operator. x ⊉ y is by default interpreted as NotSupersetEqual[x,y].

\[NotSuperset] (Mathematica Character Name)

Unicode: 2285. Alias: Esc !sup Esc. Infix set relation operator. x ⊅ y is by default interpreted as NotSuperset[x,y].

\[NotTildeEqual] (Mathematica Character Name)

Unicode: 2244. Alias: Esc !~= Esc. Infix similarity operator. x ≄ y is by default interpreted as NotTildeEqual[x,y].

\[NotTildeFullEqual] (Mathematica Character Name)

Unicode: 2247. Alias: Esc !~== Esc. Infix similarity operator. x ≇ y is by default interpreted as NotTildeFullEqual[x,y].

\[NotTilde] (Mathematica Character Name)

Unicode: 2241. Alias: Esc !~ Esc. Infix similarity operator. x ≁ y is by default interpreted as NotTilde[x,y].

\[NotTildeTilde] (Mathematica Character Name)

Unicode: 2249. Alias: Esc !~~ Esc. Infix similarity operator. x ≉ y is by default interpreted as NotTildeTilde[x,y].

\[NotVerticalBar] (Mathematica Character Name)

Unicode: 2224. Alias: Esc !| Esc. Infix operator. x  y is by default interpreted as NotVerticalBar[x,y]. Used in mathematics to mean x does not divide y.

\[Null] (Mathematica Character Name)

Unicode: F3A0. Alias: Esc null Esc. Letter-like form. Can be used to place subscripts and superscripts without having a visible base.