This is a list of computability and complexity topics, by Wikipedia page.
Computability theory is the part of the theory of computation that deals with what can be computed, in principle. Computational complexity theory deals with how hard computations are, in quantitative terms, both with upper bounds (algorithms whose complexity in the worst cases, as use of computing resources, can be estimated), and from below (proofs that no procedure to carry out some task can be very fast).
For more abstract foundational matters, see the list of mathematical logic topics. See also list of algorithms, list of algorithm general topics.
- Mathematical expression
- Lookup table, mathematical table, multiplication table
- Calculator
- Counting rods
- Abacus, Chinese abacus, Roman abacus
- Torquetum
- Napier's bones, rabdology
- Pascal's calculator
- Slide rule
- Generating trigonometric tables
- Difference engine
- Analytical engine
- Ada Byron's notes on the analytical engine
- Adding machine
- Mechanical calculator
- Comptometer
- Differential analyser
- Curta calculator
- History of computers
- Order of operations, infix notation, reverse Polish notation
- Multiplication algorithm
- Division by two
- Exponentiating by squaring
- Addition chain
- Presburger arithmetic
Definability questions
- Advice (complexity)
- Amortized analysis
- Arthur-Merlin protocol
- Best and worst cases
- Busy beaver
- Circuit complexity
- Constructible function
- Cook's theorem
- Exponential time
- Function problem
- Linear time
- Linear speedup theorem
- Natural proof
- Polynomial time
- Polynomial-time many-one reduction
- Polynomial-time Turing reduction
- Savitch's theorem
- Space hierarchy theorem
- Speed Prior
- Speedup theorem
- Subquadratic time
- Time hierarchy theorem
Complexity classes
See the list of complexity classes
Named problems
Extensions
- Probabilistic algorithm, randomized algorithm
- Las Vegas algorithm
- Non-determinism
- Non-deterministic Turing machine
- Interactive computation
- Interactive proof system
- Probabilistic Turing Machine
- Approximation algorithm
- Simulated annealing
- Ant colony algorithm
- Game semantics
- Generalized game
- Multiple agent system
- Parameterized complexity
- Process calculi
- Hypercomputation
- Real computation