Moufang implies diassociative
This article gives the statement and possibly, proof, of an implication relation between two loop properties. That is, it states that every loop satisfying the first loop property (i.e., Moufang loop) must also satisfy the second loop property (i.e., diassociative loop)
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- Moufang implies alternative: A Moufang loop is an alternative loop, i.e., it satisfies the left alternative law and the right alternative law .
- Moufang's theorem: This states that if is a Moufang loop, and are (not necessarily distinct) elements of such that , then the subloop of generated by is a group, i.e., it is associative.
Given: A Moufang loop . Elements (not necessarily distinct).
To prove: The subloop of generated by is associative.
Proof: Setting , we see that by fact (1), (using the right alternative law part). Hence, by fact (2), the subloop generated by is a group. But since , this is the same as the subloop generated by and , completing the proof.