Complexity
81Social complexity — is the approach to social phenomena that tries to analyze a social system as a complex system. The social complexity can be seen as an impact on the social analysis of increasingly influential complexity theory. It can be understood as the… …
82NL (complexity) — In computational complexity theory, NL (Nondeterministic Logarithmic space) is the complexity class containing decision problems which can be solved by a nondeterministic Turing machine using a logarithmic amount of memory space. NL is a… …
83The Complexity of Songs — was an article published by Donald Knuth, an example of an in joke in computer science, namely, in computational complexity theory. The article capitalizes on the tendency of popular songs to evolve from long and content rich ballads to highly… …
84P (complexity) — In computational complexity theory, P, also known as PTIME or DTIME(nO(1)), is one of the most fundamental complexity classes. It contains all decision problems which can be solved by a deterministic Turing machine using a polynomial amount of… …
85NP (complexity) — Diagram of complexity classes provided that P ≠ NP. The existence of problems outside both P and NP complete in this case was established by Ladner.[1] In computational complexity theory, NP is one of the most fundamental complexity classes. The… …
86Reduction (complexity) — Example of a reduction from a boolean satisfiability problem to a vertex cover problem. Blue vertices form a vertex cover which corresponds to truth values. In computability theory and computational complexity theory, a reduction is a… …
87Asymptotic computational complexity — In computational complexity theory, asymptotic computational complexity is the usage of the asymptotic analysis for the estimation of computational complexity of algorithms and computational problems, commonly associated with the usage of the big …
88List of computability and complexity topics — 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… …
89Parameterized complexity — In computer science, parameterized complexity is a measure of complexity of problems with multiple input parameters. The theory of parameterized complexity was developed in the 1990s by Rod Downey and Michael Fellows. Their 1999… …
90Descriptive complexity — is a branch of finite model theory, a subfield of computational complexity theory and mathematical logic, which seeks to characterize complexity classes by the type of logic needed to express the languages in them. For example, PH, the union of… …
