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References to 'centralizer'
1. centralizer of a k-cycle by rm50
2. class equation by yark
3. commutant by asteroid
4. concepts in abstract algebra by matte
5. conjugacy in $A_n$ by rm50
6. FC-group by yark
7. matrix ring by CWoo
8. Order Conjecture for non-commuting graph of a group by abdollahi
9. orthogonality relations by mhale
10. proof of Wedderburn's theorem by lieven