upper.triangle

Returns the lower triangle including the diagonal of a square numeric matrix.

 math

A collection of functions to support matrix calculations
for probability, econometric and numerical analysis. There are
additional functions that are comparable to APL functions which
are useful for actuarial models such as pension mathematics.
This package is used for teaching and research purposes at the
Department of Finance and Risk Engineering, New York
University, Polytechnic Institute, Brooklyn, NY 11201.
Horn, R.A. (1990) Matrix Analysis. ISBN 978-0521386326.
Lancaster, P. (1969) Theory of Matrices. ISBN 978-0124355507.
Lay, D.C. (1995) Linear Algebra: And Its Applications. ISBN 978-0201845563.

S. Thomas Kelly

matrixcalc

Collection of Functions for Matrix Calculations

upper.triangle function

<dl> <dt>x</dt>
<dd>a matrix</dd></dl>

Arguments

Frederick Novomestky <a href="/link/fnovomes%40poly.edu?package=matrixcalc&version=1.0-6" data-mini-rdoc="matrixcalc::fnovomes@poly.edu">fnovomes@poly.edu</a>

Author

Upper triangle portion of a matrix — upper.triangle

<dl>

 <dt>x</dt>
<dd>a matrix</dd>

</dl>

Frederick Novomestky <a href='mailto:fnovomes@poly.edu'>fnovomes@poly.edu</a>

upper.triangle: Upper triangle portion of a matrix

Description

Usage

Value

Arguments

Author

References

See Also

Examples