Model Theory
- Finite model theory
- Descriptive complexity theory
 - Model checking
 - Trakhtenbrot's theorem
 
 - Computable model theory
- Tarski's exponential function problem
 - Undecidable problem
 
 - Institutional model theory
- Institution (computer science)
 
 - Non-standard analysis
- Non-standard calculus
 - Hyperinteger
 - Hyperreal number
 - Transfer principle
 - Overspill
 - Elementary Calculus: An Infinitesimal Approach
 - Criticism of non-standard analysis
 - Standard part function
 
 - Set theory
- Forcing (mathematics)
- Boolean valued model
 
 
 - Forcing (mathematics)
 - Kripke semantics
- General frame
 
 
- Predicate logic
- First-order logic
- Infinitary logic
 - Many-sorted logic
 
 - Higher-order logic
- Lindström quantifier
 - Second-order logic
 
 
 - First-order logic
 
- Soundness theorem
 - Gödel's completeness theorem
- Original proof of Gödel's completeness theorem
 
 - Compactness theorem
 - Löwenheim-Skolem theorem
- Skolem's paradox
 
 - Gödel's incompleteness theorems
 
- Structure (mathematical logic)
 - Interpretation (logic)
 - Substructure
 - Elementary substructure
- Skolem hull
 
 - Non-standard model
 - Atomic model (mathematical logic)
 - Prime model
 - Saturated model
 - Existentially closed model
 - Ultraproduct
 - Age (model theory)
- Amalgamation property
 - Hrushovski construction
 
 - Potential isomorphism
 
- Theory (mathematical logic)
- Complete theory
- Vaught's test
 
 - Morley's categoricity theorem
- Stability spectrum
- Morley rank
 - Stable theory
- Forking extension
 - Strongly minimal theory
 - Stable group
- Tame group
 
 
 
 - o-minimal theory
 - Weakly o-minimal structure
 - C-minimal theory
 - Spectrum of a theory
- Vaught conjecture
 
 
 - Stability spectrum
 - Model complete theory
 - List of first-order theories
 - Conservative extension
 - Elementary class
- Pseudoelementary class
 - Strength (mathematical logic)
 
 
 - Complete theory
 
- Differentially closed field
 - Exponential field
 - Ax-Grothendieck theorem
 - Ax-Kochen theorem
 - Peano axioms
 - Non-standard model of arithmetic
 - First-order arithmetic
 - Second-order arithmetic
 - Presburger arithmetic
 - Wilkie's theorem
 
- Functional predicate
 - T-schema
 - Back-and-forth method
 - Barwise compactness theorem
 - Skolemization
 - Lindenbaum–Tarski algebra
 - Löb's theorem
 - Arithmetical set
 - Definable set
 - Ehrenfeucht–Fraïssé game
 - Herbrand interpretation / Herbrand structure / Herbrand universe
 - Imaginary element
 - Indiscernibles
 - Interpretation (model theory) / Interpretable structure
 - Pregeometry (model theory)
 - Quantifier elimination
 - Reduct
 - Signature (logic)
 - Skolem normal form
 - Type (model theory)
 - Zariski geometry
 
Read more about this topic: List Of Mathematical Logic Topics
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