Abstract
In this article, we present several inequalities treating operator means and the Cauchy–Schwarz inequality. In particular, we present some new comparisons between operator Heron and Heinz means, several generalizations of the difference version of the Heinz means and further refinements of the Cauchy–Schwarz inequality. The techniques used to accomplish these results include convexity and Löwner matrices.
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Aldaz, J.M., Barza, S., Fujii, M., Moslehian, M.S.: Advances in operator Cauchy–Schwarz inequalities and their reverses. Ann. Funct. Anal. 6(3), 275–295 (2015)
Ali, I., Yang, H., Shakoor, A.: Refinements of the Heron and Heinz means inequalities for matrices. J. Math. Inequal. 8(1), 107–112 (2014)
Bhatia, R.: Interpolating the arithmetic–geometric mean inequality and its operator version. Linear Algebra Appl. 413, 355–363 (2006)
Bhatia, R.: Trace inequalities for products of positive definite matrices. J. Math. Phys. 55, 013509 (2014)
Bhatia, R.: Positive Definite Matrices. Princeton University Press, Princeton (2007)
Conde, C.: A version of the Hermite–Hadamard inequality in a nonpositive curvature space. Banach J. Math. Anal. 6(2), 159–167 (2012)
Dragomir, S.S.: Bounds for the normalised Jensen functional. Bull. Aust. Math. Soc. 74(3), 471–478 (2006)
Hiai, F., Zhan, X.: Inequalities involving unitarily invariant norms and operator monotone functions. Linear Algebra Appl. 341, 151–169 (2002)
Horn, R., Johnson, C.: Topics in Matrix Analysis. Cambridge University Press, Cambridge (1990)
Kapil, Y., Singh, M.: Contractive maps on operator ideals and norm inequalities. Linear Algebra Appl. 459, 475–492 (2014)
Kaur, R., Moslehian, M.S., Singh, M., Conde, C.: Further refinements of the Heinz inequality. Linear Algebra Appl. 447, 26–37 (2014)
Kaur, R., Singh, M.: Complete interpolation of matrix versions of Heron and Heinz means. Math. Inequal. Appl. 16(1), 93–99 (2013)
Gohberg, I.C., Kre\(\breve{\rm \i }\)n, M.G.: Introduction to the theory of linear nonselfadjoint operators (Translated from the Russian by Feinstein, A.). In: Translations of Mathematical Monographs, vol. 18. American Mathematical Society, Providence, R.I (1969)
Liao, W., Wu, J.: Reverse arithmetic–harmonic mean and mixed mean operator inequalities. J. Inequal. Appl. 2015, 215 (2015)
Kittaneh, F.: On the convexity of the Heinz means. Integral Eq. Oper. Theory 68, 519–527 (2010)
Moslehian, M.S.: Matrix Hermite–Hadamard type inequalities. Houst. J. Math. 39(1), 177–189 (2013)
Sababheh, M.: Convex functions and means of matrices. Math. Inequal. Appl. 20(1), 29–47 (2017)
Zhan, X.: Inequalities for unitarily invariant norms SIAM. J. Matrix Anal. Appl. 20, 466–470 (1998)
Zou, L.: Inequalities related to Heinz and Heron means. J. Math. Inequal. 7(3), 389–397 (2013)
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Kapil, Y., Conde, C., Moslehian, M.S. et al. Norm Inequalities Related to the Heron and Heinz Means. Mediterr. J. Math. 14, 213 (2017). https://doi.org/10.1007/s00009-017-1015-6
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DOI: https://doi.org/10.1007/s00009-017-1015-6