Definition:Preimage of Subset under Mapping/Also known as
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Preimage of Subset under Mapping: Also known as
Some sources use counter image or inverse image instead of preimage.
Some sources use the notation $\map {f^\gets} Y$ for $f^{-1} \sqbrk Y$.
Sources
- 1965: Seth Warner: Modern Algebra ... (previous) ... (next): Chapter $\text {II}$: New Structures from Old: $\S 12$: Homomorphisms
- 1975: Bert Mendelson: Introduction to Topology (3rd ed.) ... (previous) ... (next): Chapter $1$: Theory of Sets: $\S 6$: Functions