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Results tagged with lo.logic
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user 1536
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.
1
vote
0
answers
221
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This modal logic semantics is not S5, but is it something else well-known?
The short form of the question is this:
Is there a model of modal propositional calculus that gives the modal operators the meanings
◻φ — φ is valid, or always true
◊φ = ¬◻¬φ — φ is satisfiable, …
- 524
11
votes
5
answers
6k
views
Finding minimal or canonical expressions for Boolean truth tables
This is not an urgent question, but something I've been curious about for quite some time.
Consider a Boolean function in n inputs: the truth table for this function has 2n rows.
There are uses of s …
- 524