Recursion Theory
- Entscheidungsproblem
 - Decision problem
 - Decidability (logic)
 - Church-Turing thesis
 - Computable function
- Algorithm
 - Recursion
 - Primitive recursive function
 - Mu operator
 - Ackermann function
 - Turing machine
 - Halting problem
 - Computability theory, computation
 - Herbrand Universe
 - Markov algorithm
 - Lambda calculus
- Church-Rosser theorem
 - Calculus of constructions
 
 - Combinatory logic
 - Post correspondence problem
 
 - Kleene's recursion theorem
 - Recursively enumerable set
- Recursively enumerable language
 
 - Decidable language
 - Undecidable language
 - Rice's theorem
 - Post's theorem
 - Turing degree
 - Effective results in number theory
 - Diophantine set
 - Matiyasevich's theorem
 - Word problem for groups
 - Arithmetical hierarchy
 - Subrecursion theory
- Presburger arithmetic
 - Computational complexity theory
 - Polynomial time
 - Exponential time
 - Complexity class
- Complexity classes P and NP
 - Cook's theorem
 - List of complexity classes
 - Polynomial hierarchy
 - Exponential hierarchy
 
 - NP-complete
 - Time hierarchy theorem
 - Space hierarchy theorem
 
 - Natural proof
 - Hypercomputation
- Oracle machine
 
 - Alonzo Church
 - Emil Post
 - Alan Turing
 - Jacques Herbrand
 - Haskell Curry
 - Stephen Cole Kleene
 - Definable real number
 
Read more about this topic: List Of Mathematical Logic Topics
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“Every theory is a self-fulfilling prophecy that orders experience into the framework it provides.”
—Ruth Hubbard (b. 1924)