in the (a,b) plane, compute the maximal norm along a circle
in the (a,b) plane, compute the maximal norm along a circle

mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs