7 problems
Martin's conjecture. Assume . Then:
For , let consist of sequences such that, for every ,…
Let be the problem discussed in the paper, and let and denote its countable and inverse-limit iterations, respectively. T…
C.e. Sigma-intermediate/Delta-low conjecture. There is a computably enumerable set that is intermediate for -Feiner and low for -Feiner.
Let and let be a real such that … For a real , define the -th pseudo-hyperjump by , where is the -th mem…
Lowness conjecture. Under these assumptions, is -presentable.
Let be a set of natural numbers, let denote its Turing jump, and let denote the second Turing jump of the computable degree. A set is almost everywhere dominating whe…