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Let $S$ and $T$ be sets.
Let $S \times T$ be the cartesian product of $S$ and $T$.
Then the sets $S$ and $T$ are called the factors of $S \times T$.
- 1967: George McCarty: Topology: An Introduction with Application to Topological Groups ... (previous) ... (next): Introduction: Set-Theoretic Notation
- 1978: Thomas A. Whitelaw: An Introduction to Abstract Algebra ... (previous) ... (next): $\S 8$: Cartesian product of sets