John Rigby
... that the mathematician John Rigby was a leading authority on the relationship between maths and ornamental art?
... that the mathematician <b id="mwAsI"><a href="./John_Rigby_(mathematician)" id="mwAsM" rel="mw:WikiLink" title="John Rigby (mathematician)">John Rigby</a></b> was a leading authority on the relationship between maths and ornamental art?