Four Fours/Lemmata/Two Fours/6/Solutions/5

Puzzle: Two Fours: $6$

Using exactly $2$ instances of the number $4$, the task is to write an expression for $6$, using whatever arithmetical operations you consider necessary.

Solution

$6 = \paren {\dfrac {\map \Gamma 4} {\sqrt 4} }!$