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Positive Elements and Automatic Continuity of Algebra Morphisms

✍ Scribed by Abdellah El Kinani; Amine Mohammed Nejjari; Mohamed Oudadess


Publisher
SP Birkhäuser Verlag Basel
Year
2008
Tongue
English
Weight
168 KB
Volume
5
Category
Article
ISSN
1660-5446

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📜 SIMILAR VOLUMES


Automatic Continuity of Lipschitz Algebr
✍ B. Pavlovic 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 980 KB

For a compact metric space \((K, d), \alpha \in(0,1]\) and \(f \in C(K)\), let \(p_{x}(f)=\) \(\sup \left\{|f(t)-f(s)| d(t, s)^{x}: t, s \in K\right\}\). The set \(\operatorname{Lip}_{x}(K, d)=\left\{f \in C(K): p_{x}(f)<\infty\right\}\) with the norm \(\|f\|_{x}=|f|_{\kappa}+p_{x}(f)\) is a Banach

Powers of positive elements in C*-algebr
✍ Hiroki Takamura 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 78 KB

In this paper, we show that Ogasawa's theorem has a proof in Bishop style constructive mathematics (BISH). In [25], we introduced the elementary constructive theory of C \* -algebras in BISH, but we did not discuss the powers of positive elements there.