Determinantal approach to a proof of the Riemann hypothesis
  We discuss the application of the determinantal method to the proof of the Riemann hypothesis. We start from the fact that, if a certain doubly infinite set of determinants are all positive, then the hypothesis is true. This approach extends the work of Csordas, Norfolk and Varga in 1986, and makes extensive use of the results described by Karlin. We have discovered and proved or conjectured relations in five areas of the problem, as summarized in the Introduction. Further effort could well lead to more progress. 
John Nuttall
math.NT