1.

Record Nr.

UNINA9910480574303321

Autore

Makkai Mihály <1939->

Titolo

Duality and definability in first order logic / / Michael Makkai

Pubbl/distr/stampa

Providence, Rhode Island : , : American Mathematical Society, , 1993

©1993

ISBN

1-4704-0080-4

Descrizione fisica

1 online resource (122 p.)

Collana

Memoirs of the American Mathematical Society, , 0065-9266 ; ; Volume 105, Number 503

Disciplina

511.3

Soggetti

First-order logic

Duality theory (Mathematics)

Toposes

Electronic books.

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

"September 1993, Volume 105, Number 503 (fourth of 6 numbers)."

Nota di bibliografia

Includes bibliographical references.

Nota di contenuto

""Table Of Contents""; ""Abstract""; ""Introduction""; ""1. Beth's theorem for propositional logic""; ""2. Factorizations in 2-categories""; ""3. Definable functors""; ""4. Basic notions for duality""; ""5. The Stone-type adjunction for Boolean pretoposes and ultragroupoids""; ""6. The syntax of special ultramorphisms""; ""7. The semantics of special ultramorphisms""; ""8. The duality theorem""; ""9. Preparing a functor specification""; ""10. Lifting Zawadowski's argument to ultra*morphisms""; ""11. The operations in BP* and UG""; ""12. Conclusion""; ""References""