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The product of commuting conical projections is a projection

Author: Eduardo H. Zarantonello
Journal: Proc. Amer. Math. Soc. 38 (1973), 591-594
MSC: Primary 46C05
MathSciNet review: 0318847
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Abstract: The statement in the title is proved for two projections on closed convex cones in Hilbert space.

References [Enhancements On Off] (What's this?)

  • [1] Eduardo H. Zarantonello, Projections on convex sets in Hilbert space and spectral theory. I. Projections on convex sets, Contributions to nonlinear functional analysis (Proc. Sympos., Math. Res. Center, Univ. Wisconsin, Madison, Wis., 1971) Academic Press, New York, 1971, pp. 237–341. MR 0388177

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Keywords: Hilbert space, convex set, projections
Article copyright: © Copyright 1973 American Mathematical Society

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