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References to 'center (rings)'
1. $\sigma$-finite by Koro
2. algebra by djao
3. Baer ring by CWoo
4. central simple algebra by djao
5. commutant by asteroid
6. commutativity theorems on rings by CWoo
7. Gershgorin's circle theorem result by saki
8. global dimension of a subring by joking
9. supercommutative by rmilson
10. Venn diagram by CWoo