Let a Gram point 
be called "good" if 
, and "bad" otherwise (Rosser et
al. 1969; Edwards 2001, p. 180). Then the interval between two consecutive
good Gram points is known as a Gram block.
Gram Block
See also
Gram's Law, Gram Point, Rosser's RuleExplore with Wolfram|Alpha
References
Edwards, H. M. Riemann's Zeta Function. New York: Dover, 2001.Rosser, J. B.; Yohe, J. B.; and Schoenfeld, L. "Rigorous Computation and the Zeros of the Riemann Zeta-Function." In Cong. Proc. Int. Fed. Information Process., 1968. Washington, DC: Spartan, pp. 70-76, 1969.Referenced on Wolfram|Alpha
Gram BlockCite this as:
Weisstein, Eric W. "Gram Block." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/GramBlock.html