The co-lexicographical order is defined by a1a2 · .. az

Oracle 12c: SQL
3rd Edition
ISBN:9781305251038
Author:Joan Casteel
Publisher:Joan Casteel
Chapter8: Restricting Rows And Sorting Data
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The co-lexicographical order is defined by a1a2 · .. az <cole# bib2 · .. br if a; < b; for
the last i where a; and b; differs. Prove or disprove that a language is decidable
if and only if some Turing enumerator enumerates the language in co-lexicographic
order.
Transcribed Image Text:The co-lexicographical order is defined by a1a2 · .. az <cole# bib2 · .. br if a; < b; for the last i where a; and b; differs. Prove or disprove that a language is decidable if and only if some Turing enumerator enumerates the language in co-lexicographic order.
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