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math.LO2011
A Simple Proof of McNaughton Theorem
Eduardo J. Dubuc, Yuri Poveda
In this note we exhibit a very simple proof of McNaughton Theorem, almost right out of the definitions, and at the same time we observe that this theorem does not depend of Chang's…
math.CT2011★ 2 cited
A construction of 2-cofiltered bilimits of topoi
Eduardo J. Dubuc, Sergio Yuhjtman
We show the existence of bilimits of 2-cofiltered diagrams of topoi, generalizing the construction of cofiltered bilimits developed in "SGA 4 Springer LNM 270 (1972)". For any give…