Group is Homomorphic Image of Free Group
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Theorem
Let $G$ be a group.
Then there exists:
- a free group $F$
- a homomorphism $\phi: G \to F$
such that $F$ is the image of $G$.
Proof
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Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): free group
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): free group