infeasible
41DSPACE — For digital repositories, see DSpace. In computational complexity theory, DSPACE or SPACE is the computational resource describing the resource of memory space for a deterministic Turing machine. It represents the total amount of memory space… …
42DTIME — In computational complexity theory, DTIME (or TIME) is the computational resource of computation time for a deterministic Turing machine. It represents the amount of time (or number of computation steps) that a normal physical computer would take …
43NTIME — In computational complexity theory, the complexity class NTIME(f(n)) is the set of decision problems that can be solved by a non deterministic Turing machine using time O(f(n)), and unlimited space. The well known complexity class NP can be… …
44P (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… …
45NEXPTIME — In computational complexity theory, the complexity class NEXPTIME (sometimes called NEXP) is the set of decision problems that can be solved by a non deterministic Turing machine using time O(2p(n)) for some polynomial p(n), and unlimited space.… …
46Metaheuristic — In computer science, metaheuristic designates a computational method that optimizes a problem by iteratively trying to improve a candidate solution with regard to a given measure of quality. Metaheuristics make few or no assumptions about the… …
47NL (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… …
48L (complexity) — In computational complexity theory, L (also known as LSPACE) is the complexity class containing decision problems which can be solved by a deterministic Turing machine using a logarithmic amount of memory space. Logarithmic space is sufficient to …
49RL (complexity) — In computational complexity theory, RL (Randomized Logarithmic space),[1] sometimes called RLP (Randomized Logarithmic space Polynomial time),[2] is the complexity class of problems solvable in logarithmic space and polynomial time with… …
50Two-factor authentication — (TFA, T FA or 2FA) is an approach to authentication which requires the presentation of two different kinds of evidence that someone is who they say they are. It is a part of the broader family of multi factor authentication, which is a defense in …
