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May
26
comment Regressive injective function in a set of infinite cardinals
thanks for the clarification on that point. Sure we get a regressive function. but how to make it injective? that's where i'm actually stucked.
May
25
asked Regressive injective function in a set of infinite cardinals
May
21
comment $\kappa$-Suslin (Aronszajn, Kurepa) subtree of the complete binary tree, $2^{\lt \kappa}$
When you define Lev_eta(S) for eta a limit ordinal, and take alpha=sup{alpha_xi}, why is there at most one x in Lev_alpha(T) that extends B?
Apr
27
awarded  Student
Apr
24
asked $\kappa$-Suslin (Aronszajn, Kurepa) subtree of the complete binary tree, $2^{\lt \kappa}$