Skip to main content
3 events
when toggle format what by license comment
Jun 14, 2010 at 17:01 history edited Akhil Mathew CC BY-SA 2.5
added 51 characters in body; added 42 characters in body
Jun 14, 2010 at 15:59 comment added KConrad Akhil, I think it's more natural to refer to the order of a root of unity rather than its degree (that is more intrinsic to the root of unity) and also you forgot about 0 being in the residue field: you meant to count the cardinality of the nonzero elements in the residue field, e.g., Q_p has residue field of size p and the number of roots of unity (with order prime to p) is p-1 rather than p.
Jun 14, 2010 at 15:24 history answered Akhil Mathew CC BY-SA 2.5