Google matrix represents graph with links between pages. PageRank algorithm uses stochastic matrix for webpage ranking. Matrix must be stochastic, irreducible and aperiodic for convergence
Lagrange polynomial is unique polynomial of lowest degree for data interpolation. Method discovered by Edward Waring in 1779, named after Joseph-Louis Lagrange in 1795. Based on Euler's 1783 formula
Horner's method dates back hundreds of years to Chinese and Persian mathematicians. Method was first described by Horner in 1819, but attributed to Lagrange. Horner's method was widely used until computers became common around 1970
Condition number measures function sensitivity to input changes. Well-conditioned problems have low condition numbers, ill-conditioned have high ones. Condition number is maximum ratio of relative error in output to input
det returns determinant of square matrix A. Function accepts single or double numeric matrices. Supports complex numbers
Interpolates values between two variables using linear interpolation. Returns results passing through original sampling. Supports both full grids and grid vectors