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first-order and higher-order logic, model theory, set theory, proof theory, computability theory, formal languages, definability, interplay of syntax and semantics, constructive logic, intuitionism, philosophical logic, modal logic, completeness, Gödel incompleteness, decidability, undecidability, theories of truth, truth revision, consistency.
13
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Category theorists stance on deductive systems
Lambek & Scott: Introduction to higher order categorical logic
says that
"For example, categorists may be unhappy when we treat categories as special kinds of deductive systems and logicians may …
2
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0
answers
136
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The premises of Aczel's inductive definitions
This is a follow-up to
https://stackoverflow.com/questions/49650053/are-inductive-definitions-finitely-generated-in-isabelle
As I said there, Aczel writes in his paper An Introduction to Inductive D …