Document Zbl 0137.32501

Zarantonello, E. H.

The closure of the numerical range contains the spectrum. (English) Zbl 0137.32501

Bull. Am. Math. Soc. 70, 781-787 (1964).

Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page
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Cited in 3 Reviews

Cited in 33 Documents

Keywords:

functional analysis

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References:

[1]	Marshall Harvey Stone, Linear transformations in Hilbert space, American Mathematical Society Colloquium Publications, vol. 15, American Mathematical Society, Providence, RI, 1990. Reprint of the 1932 original. · Zbl 0005.40003
[2]	P. A. Alexandroff, Combinatorial topology, Graylock, Rochester, N. Y., 1956. · Zbl 0070.17902
[3]	Felix E. Browder, Remarks on nonlinear functional equations, Proc. Nat. Acad. Sci. U.S.A. 51 (1964), 985 – 989. · Zbl 0126.12301

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