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\nrightarrow

The symbol \nrightarrow is used to denote a negated or non-existent arrow, often representing a lack of implication or a failed mapping in mathematical logic and set theory.

Examples

Indicates that A does not imply B in logic.

A \nrightarrow B

Represents a function f that does not map from set X to set Y.

f: X \nrightarrow Y

Denotes that there is no direct relation or mapping from x to y.

x \nrightarrow y