C. J. Ash

INEVITABLE GRAPHS: A PROOF OF THE TYPE II CONJECTURE AND SOME RELATED DECISION PROCEDURES

C. J. Ash · International Journal of Algebra and Computation · 1991 · 168 citations

Natural Sciences, Computer Science, Mathematics +11

Recursive labelling systems and stability of recursive structures in hyperarithmetical degrees

C. J. Ash · Transactions of the American Mathematical Society · 1986 · 100 citations · Full text

Natural Sciences, Computer Science, Mathematics +13

Finite semigroups with commuting idempotents

C. J. Ash, T. E. Hall · Journal of the Australian Mathematical Society Series A Pure Mathematics and Statistics · 1987 · 71 citations

Natural Sciences, Mathematics, Algebra +4

Pairs of recursive structures

C. J. Ash, Julia F. Knight · Annals of Pure and Applied Logic · 1990 · 67 citations

Computing, Computer Science, Algorithms +7

Categoricity in hyperarithmetical degrees

C. J. Ash · Annals of Pure and Applied Logic · 1987 · 60 citations

Natural Sciences, Mathematics, Algebra +7