Programmer Guide/Command Reference/EVAL/qdet: Difference between revisions

Latest revision as of 11:33, 21 April 2011

Compute the pseudo-derminant of the square matrix x.

Usage

qdet(x)

Result: The pseudo-determinant (scalar) of x.; Note: In linear algebra and statistics, the pseudo-determinant is the product of all non-zero eigenvalues of a square matrix. It coincides with the regular determinant when the matrix is non-singular.
See also: abs, absv

@@ Line 1: / Line 1: @@
-{{DISPLAYTITLE:{{SUBPAGENAME}}}}
+{{DISPLAYTITLE:abs}}
-=====qdet=====
+Compute the pseudo-derminant of the square matrix ''x''.
+;Usage: <code>qdet(<var>x</var>)</code>
+:;<var>x</var>: a square matrix
+;Result: The pseudo-determinant (scalar) of ''x''.
+:Note: In linear algebra and statistics, the pseudo-determinant is the product of all non-zero eigenvalues of a square matrix. It coincides with the regular determinant when the matrix is non-singular.
+;See also: [[../abs|abs]], [[../absv|absv]]
-Computes the quasi-determinant of the square matrix <var>x</var>. <var>x</var> can also be a singular matrix.
+[[../#Functions|<function list>]]
-=====Usage:=====
-<code>qdet(<var>x</var>)</code>
-=====Result:=====
-The quasi-determinant of <var>x</var>.
-=====Return Type:=====
-a scalar