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Second Grade Study Guide
Second Grade Study Guide

Fraction Puzzles
Fraction Puzzles

Fractions Practice Puzzles
Fractions Practice Puzzles

A Practical Introduction to Data Structures and Algorithm Analysis
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Numerical solution of saddle point problems
Numerical solution of saddle point problems

... In the vast majority of cases, linear systems of saddle point type have real coefficients, and in this paper we restrict ourselves to the real case. Complex coefficient matrices, however, do arise in some cases; see, e.g., Bobrovnikova and Vavasis (2000), Mahawar and Sarin (2003) and Strang (1986, page ...
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CS 372: Computational Geometry Lecture 14 Geometric
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... Definition (c-approximation algorithm) A c-approximation algorithm for a maximization problem is an algorithm that computes a c-factor approximation of the optimum in polynomial time. We will give a 2-approximation algorithm for the diameter problem. That is, we find ∆0 such that ∆0 6 ∆∗ 6 2∆0 O(n) ...
Quadrature Rules With an Even Number of Multiple Nodes and a
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Multi-Period Stock Allocation Via Robust Optimization
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Constraint Satisfaction Complexity and Logic Phokion G. Kolaitis

... The Fine Structure of NP Theorem: Ladner - 1975 If P 6= NP, then there is a problem Q such that • Q ∈ NP − P; • Q is not NP-complete. NP-complete NP − P not NP-complete P Remark: Consequently, it is conceivable that a family of NP-problems contains problems of such intermediate complexity problems. ...
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Fractions Part Two

1 2 3 4 5 ... 53 >

Computational complexity theory



Computational complexity theory is a branch of the theory of computation in theoretical computer science and mathematics that focuses on classifying computational problems according to their inherent difficulty, and relating those classes to each other. A computational problem is understood to be a task that is in principle amenable to being solved by a computer, which is equivalent to stating that the problem may be solved by mechanical application of mathematical steps, such as an algorithm.A problem is regarded as inherently difficult if its solution requires significant resources, whatever the algorithm used. The theory formalizes this intuition, by introducing mathematical models of computation to study these problems and quantifying the amount of resources needed to solve them, such as time and storage. Other complexity measures are also used, such as the amount of communication (used in communication complexity), the number of gates in a circuit (used in circuit complexity) and the number of processors (used in parallel computing). One of the roles of computational complexity theory is to determine the practical limits on what computers can and cannot do.Closely related fields in theoretical computer science are analysis of algorithms and computability theory. A key distinction between analysis of algorithms and computational complexity theory is that the former is devoted to analyzing the amount of resources needed by a particular algorithm to solve a problem, whereas the latter asks a more general question about all possible algorithms that could be used to solve the same problem. More precisely, it tries to classify problems that can or cannot be solved with appropriately restricted resources. In turn, imposing restrictions on the available resources is what distinguishes computational complexity from computability theory: the latter theory asks what kind of problems can, in principle, be solved algorithmically.
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