principal function
1principal function — noun : the temporal integral of the kinetic potential : the integral of the kinetic less the potential energy …
2Hamilton's principal function — The Hamilton s principal function is defined by the Hamilton–Jacobi equation (HJE), another alternative formulation of classical mechanics. This function S is related to the usual action, mathcal{S}, by fixing the initial time t {1} and endpoint… …
3Principal components analysis — Principal component analysis (PCA) is a vector space transform often used to reduce multidimensional data sets to lower dimensions for analysis. Depending on the field of application, it is also named the discrete Karhunen Loève transform (KLT),… …
4Principal — may refer to: Education The head of an educational institution: *Principal (school), head of a primary or secondary school *Principal (university), chief executive of a university **Dean (education), a person with significant authority **Provost… …
5Principal component analysis — PCA of a multivariate Gaussian distribution centered at (1,3) with a standard deviation of 3 in roughly the (0.878, 0.478) direction and of 1 in the orthogonal direction. The vectors shown are the eigenvectors of the covariance matrix scaled by… …
6Principal branch — In mathematics, a principal branch is a function which selects one branch, or slice , of a multi valued function. Most often, this applies to functions defined on the complex plane: see branch cut.One way to view a principal branch is to look… …
7Principal value — In considering complex multiple valued functions in complex analysis, the principal values of a function are the values along one chosen branch of that function, so it is single valued. Motivation Consider the complex logarithm function log z .… …
8Principal part — In mathematics, the principal part has several independent meanings.Laurent seriesprincipal part of the Laurent series of a function f ( z ),: sum {k= infty}^infty a k (z a)^kis the series of terms with negative degree, that is: sum {k= infty}^{… …
9Principal bundle — In mathematics, a principal bundle is a mathematical object which formalizes some of the essential features of a Cartesian product X times; G of a space X with a group G . Analogous to the Cartesian product, a principal bundle P is equipped with… …
10Principal-agent problem — In political science and economics, the principal agent problem or agency dilemma treats the difficulties that arise under conditions of incomplete and asymmetric information when a principal hires an agent. Various mechanisms may be used to try… …
