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单词 RussoDyeTheorem
释义

Russo-Dye theorem


Let A be a unital C*-algebra. Then the unit ball of A is the closed convex hullMathworldPlanetmath of the unitariesMathworldPlanetmath in A. Moreover, these unitary elementsMathworldPlanetmath are extreme pointsPlanetmathPlanetmath of the unit ball.

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更新时间:2025/5/4 17:57:59