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Approximation invariance of semi-group operators under perturbations

✍ Scribed by P.L Butzer; W Köhnen


Publisher
Elsevier Science
Year
1969
Tongue
English
Weight
286 KB
Volume
2
Category
Article
ISSN
0021-9045

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✍ Anne V Shepler 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 99 KB

Let G be a finite group of complex n = n unitary matrices generated by reflections acting on ‫ރ‬ n . Let R be the ring of invariant polynomials, and let be a multiplicative character of G. Let ⍀ be the R-module of -invariant differential forms. We define a multiplication in ⍀ and show that under thi