A method of virtual displacements for the degenerate discrete approximation problem
Authors: W. Fraser and J. M. Bennett
Journal: Math. Comp. 32 (1978), 421-430
MSC: Primary 41A50
MathSciNet review: 0487191
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Abstract: Given the system of equations
A necessary and sufficient condition to determine if X minimizes R is valid if X is an ordinary vertex but not if X is degenerate. A degeneracy at X can be removed by applying perturbations to an appropriate number of the so that X becomes an ordinary vertex of a modified problem. By noting that the test uses only values of the , it is possible to avoid actual introduction of the perturbations to the with a resulting substantial improvement of the efficiency of the computation.
-  I. BARRODALE & F. D. K. ROBERTS, "Solution of an overdetermined system of equations in the norm," Comm. ACM, v. 17, 1974.
- I. BARRODALE & F. D. K. ROBERTS, "Solution of an overdetermined system of equations in the norm," Comm. ACM, v. 17, 1974.
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