infeasible
51Venti — is a network storage system that permanently stores data blocks. A 160 bit SHA 1 hash of the data (called score by Venti) acts as the address of the data. This enforces a write once policy since no other data block can be found with the same… …
52RE (complexity) — In computability theory and computational complexity theory, RE (recursively enumerable) is the class of decision problems for which a yes answer can be verified by a Turing machine in a finite amount of time.[1] Informally, it means that if the… …
53Dual problem — In constrained optimization, it is often possible to convert the primal problem (i.e. the original form of the optimization problem) to a dual form, which is termed a dual problem. Usually dual problem refers to the Lagrangian dual problem but… …
54One-way compression function — In cryptography, a one way compression function is a function that transforms two fixed length inputs to an output of the same size as one of the inputs. The transformation is one way , meaning that it is difficult given a particular output to… …
55Distributed Antenna System — DAS diagram A typical DAS node for the Videotron 3G netwo …
56DLOGTIME — is the complexity class of all computational problems solvable in a logarithmic amount of computation time on a deterministic Turing machine. It is the smallest nontrivial class using the resource of deterministic time.[citation needed] It must… …
57Intersection of a polyhedron with a line — In general, a convex polyhedron is defined as the intersection of a finite number of halfspaces. That is, a convex polyhedron is the set of solutions of a system of inequations of the form :Ax le b. There are many problems in which it is useful… …
58North Carolina Turnpike Authority — The North Carolina Turnpike Authority was created in 2002 as a board with the authority to study, plan, develop and undertake preliminary design work for toll roads and toll bridges in the U.S. state of North Carolina. The NCTA has the power to… …
59Quantum digital signature — A Quantum Digital Signature (QDS) refers to the quantum mechanical equivalent of either a classical digital signature or, more generally, a handwritten signature on a paper document. Like a handwritten signature, a digital signature is used to… …
60Cryptography — Secret code redirects here. For the Aya Kamiki album, see Secret Code. Symmetric key cryptography, where the same key is used both for encryption and decryption …
