Mathematical Inequalities & Applications · Volume 26, Issue 3 An improved Spira's inequality for the Riemann zeta function and its derivatives in the critical strip 26-47 Pages 783-791 DOI 10.7153/mia-2023-26-47 Downloads Short PDF Full PDF PNG Authors Renato Spigler Keywords Spira's inequality zeros of the derivatives of Riemann zeta function modulus of ζ(s) in the critical strip Subject classes 11M06 11M99 11M26