undecidability

Semi-Decidable Theory

A semi-decidable theory allows for an algorithm to list all its theorems. However, it may not offer a way to…

4 days ago

Limitation Result

A limitation result defines the boundaries of what can be achieved in a logical or mathematical system. It often signifies…

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Entscheidungsproblem

Hilbert's Entscheidungsproblem sought an algorithm to determine the truth of any mathematical statement. Alan Turing and Alonzo Church proved it…

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Effectively Decidable Theory

An effectively decidable theory is a formal system where an algorithm can definitively prove any statement as either true or…

4 days ago

Church’s Theorem

Church's theorem proves the undecidability of fundamental decision problems in logic, like the Entscheidungsproblem. It demonstrates that no logic can…

4 days ago