... ps,p∈k−1.2.10Applying the functional L to both sides of 2.10 and noting 2.7 and 2.8,weobtain2.4as required.3. A Functional ProofIt seems that the original proof of Wang and Han recorded in the previous ... efficiency of algorithms of analysis,” Bulletin of the American Mathematical Society,vol.13, no. 2, pp. 87–121, 1985.7 H. Ren and S. Yang, “A general L2inequality of Gr¨uss type,” Journal of Inequalities ... f0Hk/k−1,3.4Lf0Hk/k−1Lf0.3.5 Journal of Inequalities and Applications 7They vanishes on1,2 ,and 3, respectively. So, 4.5 applies see 7 for details.Itisaroutine computation to find their norms and they...