Field of order 9

1 · John Cook · Sept. 21, 2022, 9:50 a.m.
This post will give a detailed example of working in a field with nine elements. This is important because finite fields are not often treated concretely except for the case of prime order. In my first post on Costas arrays I mentioned in a footnote that Lempel’s algorithm works more generally over any finite field, […] The post Field of order 9 first appeared on John D. Cook....