Заглавие | $\prod_{1}^{0}$-POSITIVE INDUCTIVE DEFINABILITY ON ABSTRACT STRUCTURES |
Вид публикация | Journal Article |
Година на публикуване | 1998 |
Автори | Nikolova S |
Списание | Annuaire de l’Université de Sofia “St. Kliment Ohridski”. Faculté de Mathématiques et Informatique |
Том | 90 |
Issue | Livre 1 - Mathématiques et Mecanique |
Pagination | 91-108 |
ISSN | 0205-0808 |
ключови думи | inductive definability, non-deterministic computability, points of $\forall$-definedness, prime computability |
Резюме | Inductive definability by means of $\prod_{1}^{0}$-positive formulas is studied in the paper. An explicit characterization of the $\prod_{1}^{0}$-positive inductive sets on an arbitrary abstract structure with equality is presented. A relationship between these sets and the sets of all points of $\forall$-definedness of non-deterministic programs is established. |
1991/95 MSC | 03D70, 03D75 |
Прикачен файл | Размер |
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90-091-108.pdf | 1.65 MB |