### Two cardinal models for singular $\mu$

by Garti and Shelah. [GaSh:891]
Math Logic Quarterly, 2007
We deal here with colorings of the pair (mu^+, mu), when mu is a strong limit and singular cardinal. We show that there exists a coloring c, with no refinement. It follows, that the properties of identities of (mu^+, mu) when mu is singular, differ in an essential way from the case of regular mu .

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