Showing papers by "Marek Perkowski published in 1981"
TL;DR: A new computer program for symbolic calculations in general relativity, named ORTOCARTAN, which calculates the curvature quantities from an orthonormal tetrad of forms representing the metric, both the tetrad and the coordinate components.
Abstract: This paper is meant to announce the appearance of a new computer program for symbolic calculations in general relativity, named ORTOCARTAN. The program calculates the curvature quantities from an orthonormal tetrad of forms representing the metric, both the tetrad and the coordinate components. The paper describes the main features of the program's input and output, and compares the program's speed to a few general-purpose systems, notably LAM, ALTRAN, FORMAC, REDUCE, and SYMBAL. A general overview of technical parameters of the program, and conceptual features of the algorithm is given.
11 citations
TL;DR: A new computer program for algebraic calculations named ORTOCARTAN is announced, readily applicable for calculating the curvature tensors in general relativity, and can be applied to many other kinds of calculation.
3 citations