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A hierarchy of independent $$\omega$$-processions of cosimple isols. (English. Russian original) Zbl 0397.03028
Algebra Logic 17, 40-58 (1978); translation from Algebra Logika 17, 56-78 (1978).
##### MSC:
 03D50 Recursive equivalence types of sets and structures, isols 03D25 Recursively (computably) enumerable sets and degrees
Full Text:
##### References:
 [1] E. Ellentuck, ”On the degrees of universal regressive isols,” Math. Scand.,32, No. 2, 145–164 (1973). · Zbl 0275.02040 [2] E. Ellentuck, ”Decomposable isols and their degrees,” Z. Math. Log. Grundl. Math.,22, No. 3, 251–260 (1976). · Zbl 0344.02034 [3] E. Ellentuck, ”On the form of functions which preserve regressive isols,” Compos. Math.,26, No. 3, 283–302 (1973). · Zbl 0272.02067 [4] E. Ellentuck, ”Universal cosimple isols,” Pac. J. Math.,42, No. 3, 629–638 (1972). · Zbl 0254.02032 [5] A. Nerode, ”Extensions to isols,” Ann. Math.,73, No. 2, 362–403 (1961). · Zbl 0101.01203 [6] J. C. E. Dekker, ”The minimum of two regressive isols,” Math. Zeit.,83, No. 4, 345–366 (1964). · Zbl 0122.01002 [7] J. Barback, ”A note on regressive isols,” Notre Dame J. Form. Logic,7, No. 2, 203–205 (1966). · Zbl 0207.30803 [8] V. L. Mikheev, ”Sparse and universal regressive isols,” Sib. Mat. Zh.,18, No. 2, 360–369 (1977). · Zbl 0411.03038 [9] W. Richter, ”Regressive sets of ordern,” Math. Zeit.,86, No. 5, 372–374 (1965). · Zbl 0207.30801 [10] J. Barback, ”Regressive upper bounds,” Seminar Math.,39, 248–272 (1967). · Zbl 0159.01002 [11] J. Barback, ”Two notes on regressive isols,” Pac. J. Math.,16, No. 3, 407–420 (1966). · Zbl 0199.02503 [12] J. C. E. Dekker and J. Myhill, ”Recursive equivalence types,” Univ. Calif. Publ. Math.,3, No. 3, 67–213 (1960). · Zbl 0249.02021 [13] H. Rogers, Theory of Recursive Functions and Effective Computability McGraw-Hill (1967). · Zbl 0183.01401
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