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An estimator of the actual values of population.

A very useful active feedback method for controlling things like temperature control systems, servo motors, and flow control valves.

An algebraic integer of the form a+bsqrt(D) where D is squarefree forms a quadratic field and is denoted Q(sqrt(D)). If D>0, the field is called a real quadratic field, and ...

A conjecture for the eigenvalues of modular forms under Hecke operators.

A type of binary tree.

The word "rank" refers to several related concepts in mathematics involving graphs, groups, matrices, quadratic forms, sequences, set theory, statistics, and tensors. In ...

The Ree group R(q) is the automorphism group of a S(2,q+1,q^3+1) Steiner system.

The Reye graph is the transposition graph G_4 of order 4.

A group which is related to the Taniyama-Shimura conjecture.

A set of sample problems in unconstrained optimization is given by loading Optimization`UnconstrainedProblems` and evaluating $FindMinimumProblems.