\xhookrightarrow{abc}
The command \xhookrightarrow{abc} is used in LaTeX to create an extensible arrow with a hook on the left side and a label 'abc' above it. This is typically used in mathematical diagrams or equations to indicate a type of mapping or transformation that is injective or has some special property, as suggested by the hook.
Indicates an injective mapping from set A to set B with label 'abc'.
A \xhookrightarrow{abc} B
Represents an injective linear transformation from vector space V to W with transformation labeled as \phi.
V \xhookrightarrow{\phi} W
Denotes an injective function f from set X to set Y.
X \xhookrightarrow{f} Y