The condition numbers described by Stewart, Todd, and others for a matrix A are given by the suprema of the norms of all the oblique projection operators respectively on the image space of AT and the null space of A. This paper shows that these two numbers coincide.
β¦ LIBER β¦
A note on the condition numbers of the B-spline bases
β Scribed by Tom Lyche
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 140 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0021-9045
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## Abstract Is it possible to give an abstract characterisation of constructive real numbers? A condition should be that all axioms are valid for Dedekind reals in any topos, or for constructive reals in Bishop mathematics. We present here a possible firstβorder axiomatisation of real numbers, whic