\impliedby
The symbol \impliedby is used in logic and mathematics to denote 'is implied by'. It is the reverse of the implication arrow \implies, indicating that the statement on the right is a consequence of the statement on the left.
Statement A is implied by statement B.
A \impliedby B
The inequality x > 2 is implied by the inequality x^2 > 4.
x > 2 \impliedby x^2 > 4
The conjunction P and Q is implied by the statement P.
P \land Q \impliedby P