Q
QR algorithm, 283, 894 QR decomposition, 894 quadrangle, 134, 136 circumscribing, 136 concave, 136 convex, 136 inscribed, 136 quadrant relations, trigonometric functions, 77 quadrant, Cartesian coordinates, 189 quadratic curve, 205 surface, 223 quadratic form first fundamental, of a surface, 245 index of inertia, 282 real positive definite, 282 second fundamental, surface, 248 transformation principal axis, 281 quadrature formula, 898 Gauss type, 900 Hermite, 899 integral equation, 572 interpolation quadrature, 899 Lobatto type, 901 quadruple (ordered four-tuple), 294 quantification, restricted, 290 quantifier, 289 quantile, 752 quantity, infinitesimal, 441, 447 quantum number, 541 energy, 541 magnetic, 544 orbital angular momentum, 543 vibration quantum number, 546 quartic, 96 quasiperiodic, 806 queuing, 769 theory, 769 quintuple (ordered 5-tuple), 294 quotient, 1, 12 derivative, 382 differential, 379 set, 297