 CARMA COLLOQUIUM
 Speaker: Prof Ross McPhedran, The University of Sydney
 Title: The Riemann Hypothesis for Combinations of Zeta Functions
 Location: Room V129, Mathematics Building (Callaghan Campus) The University of Newcastle
 Time and Date: 4:00 pm, Thu, 14^{th} Jul 2011
 Abstract:
This paper studies combinations of the Riemann zeta function, based on one defined by P.R. Taylor, and shown by him to have all its zeros on the critical line. With a rescaled complex argument, this is denoted here by ${\cal T}_(s)$, and is considered together with a counterpart function ${\cal T}_+(s)$, symmetric rather than antisymmetric about the critical line. We prove by a graphical argument that ${\cal T}_+(s)$ has all its zeros on the critical line, and that the zeros of both functions are all of first order. We also establish a link between the zeros of ${\cal T}_(s)$ and of ${\cal T}_+s)$ with zeros of the Riemann zeta function $\zeta(2 s1)$, and between the distribution functions of the zeros of the three functions.
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