Abstract
For reasons explained in Chapter I, our studies have so far been confined to linear systems
with symmetric and positive definite coefficient matrix A. b is the vector of the constant terms, x is the vector of the unknowns, but in this chapter, the letter x shall denote an arbitrary point of the N- dimensional space whereas the solution of (II. 1) will be denoted by — A-1b. The order of the system will be denoted throughout by JV, whereas n is used for the number of different eigenvalues of A, which may be smaller than N.
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Rutishauser, H. (1959). Theory of Gradient Methods. In: Refined Iterative Methods for Computation of the Solution and the Eigenvalues of Self-Adjoint Boundary Value Problems. Mitteilungen aus dem Institut für angewandte Mathematik, vol 8. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-7224-9_2
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DOI: https://doi.org/10.1007/978-3-0348-7224-9_2
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