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22 Pages

Coalgebra‐Galois Extensions from the Extension Theory Point of View

WithTomasz Brzeziński

Coalgebra‐Galois extensions generalise Hopf‐Galois extensions, which can be viewed as non‐commutative torsors. In this paper it is analysed when a coalgebra‐Galois extension is a separable, split, or strongly separable extension.