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A specific form of Grothendieck's inequality for the two-dimensional case, with applications to C*-algebras

Published online by Cambridge University Press:  20 January 2009

G. J. O. Jameson
Affiliation:
Department of Mathematics, Lancaster University, Lancaster LA1 4YF
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Abstract

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We characterize bilinear forms V on such that V(e, e) = ‖V‖ = 1 in terms of their matrices. For such V we prove that |V(x, y)|2≦φ(|x|2)ψ(|y|2) for all x, y, where φ(x)= V(x, e), ψ(y) = V(e, y). Some other properties of such forms are given.

Type
Research Article
Copyright
Copyright © Edinburgh Mathematical Society 1994

References

REFERENCES

1.Davie, A. M., Matrix norms related to Grothendieck's inequality, in Banach Spaces (ed. Kalton, N. and Saab, E., Lecture Notes in Math. 1166, Springer, Berlin 1985), 2226.CrossRefGoogle Scholar
2.Haagerup, U., The Grothendieck inequality for bilinear forms on C*-algebras, Adv. Math. 56 (1985), 93116.CrossRefGoogle Scholar
3.Jameson, G. J. O., Summing and Nuclear Norms in Banach Space Theory (London Math. Soc. Student Texts 8, Cambridge Univ. Press, 1987).CrossRefGoogle Scholar
4.Pisier, G., Grothendieck's theorem for non-commutative C*-algebras with an appendix on Grothendieck's constant. J. Funct. Anal. 29 (1978), 397415.CrossRefGoogle Scholar
5.Pisier, G., Factorization of Linear Operators and Geometry of Banach Spaces (American Math. Soc., Providence 1986).CrossRefGoogle Scholar
6.Raeburn, I. and Sinclair, A. M., The C*-algebra generated by two projections, Math. Scand 65 (1989), 278290.CrossRefGoogle Scholar
7.Tonge, A., The complex Grothendieck inequality for 2 × 2 matrices, Bull. Greek Math. Soc. 27 (1986), 133135.Google Scholar