Some remarks on the spectra and numerical range

Vasile Istrăţescu

Commentationes Mathematicae Universitatis Carolinae (1968)

  • Volume: 009, Issue: 4, page 527-531
  • ISSN: 0010-2628

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Istrăţescu, Vasile. "Some remarks on the spectra and numerical range." Commentationes Mathematicae Universitatis Carolinae 009.4 (1968): 527-531. <http://eudml.org/doc/16292>.

@article{Istrăţescu1968,
author = {Istrăţescu, Vasile},
journal = {Commentationes Mathematicae Universitatis Carolinae},
keywords = {functional analysis},
language = {eng},
number = {4},
pages = {527-531},
publisher = {Charles University in Prague, Faculty of Mathematics and Physics},
title = {Some remarks on the spectra and numerical range},
url = {http://eudml.org/doc/16292},
volume = {009},
year = {1968},
}

TY - JOUR
AU - Istrăţescu, Vasile
TI - Some remarks on the spectra and numerical range
JO - Commentationes Mathematicae Universitatis Carolinae
PY - 1968
PB - Charles University in Prague, Faculty of Mathematics and Physics
VL - 009
IS - 4
SP - 527
EP - 531
LA - eng
KW - functional analysis
UR - http://eudml.org/doc/16292
ER -

References

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  1. S. BERBERIAN, A note on operators unitarily..., Journ. London Math. Soc. 37 (1962), 403-404. (1962) Zbl0111.30901MR0141996
  2. V. ISTRĂTESCU, A note on hyponormal operators, (to appear, Indian Math. Journ.). MR0279619
  3. G. ORLAND, On a class of operators, Proc. Amer. Math. Soc. 15 (1964), 75-79. (1964) Zbl0123.31601MR0157244
  4. T. SAITO, T. YOSHINO, On a conjecture of Berberian, Tohoku Math. J. 17 (1965), 147-149. (1965) Zbl0132.35703MR0187093
  5. I. H. SHETH, On hyponormal operators, Proc. Amer. Math, Soc. 17 (1966), 998-1000. (1966) Zbl0148.38403MR0196498
  6. I. H. SHETH, On normaloid operators, (to appear). Zbl0174.44303MR0240662
  7. J. STAMPFLI, J. WILLIAMS, Growth conditions and the numerical range in a Banach algebra, (to appear). MR0243352
  8. J. WILLIAMS, Spectra of products and numerical range, Journ. Math. Anal. App. 17 (2) (1967). (1967) MR0203491
  9. J. WILLIAMS, Operators similar to their adjoints, (to appear). Zbl0165.15002MR0233230

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