Almost semirecursive sets (Q1972518)

The notion of almost semirecursive sets is introduced. It is proved that: (i) If \(A\) and \(\overline{A}\) are almost semirecursive sets, then \(A\) is a semirecursive set. (ii) There exists a wsr*-set which is neither a wsr nor an almost semirecursive set.