LeftDoubleBracket

\[LeftDoubleBracket]

Alias: [[.

Compound operator with built-in evaluation rules.

mi,j, ... is by default interpreted as Part[m, i, j, ... ].

Sometimes used in mathematics to indicate a class of algebraic objects with certain variables or extensions.

Extensible character; grows by default to limited size.

See Section 1.10.4 and Section 3.10.4.

See also: \[RawLeftBracket] , \[LeftDoubleBracketingBar] .