LEC ALG2 12

Simplicity of An

Theorem 101.1(Theorem).

$A_5$ is simple.

Theorem 101.2(Theorem).

$A_n$ is simple for $n\ge 5$.

See Conrad (n.d.)

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References

Conrad, K. (n.d.). Simplicity of A_n. Retrieved January 4, 2026, from https://kconrad.math.uconn.edu/blurbs/grouptheory/Ansimple.pdf