The 2-Character Table Does Not Determine a Group

Kenneth W. Johnson, Surinder K. Sehgal
1993 Proceedings of the American Mathematical Society  
Frobenius had defined the group determinant of a group G which is a polynomial in n = \G\ variables. Formanek and Sibley have shown that the group determinant determines the group. Hoehnke and Johnson show that the 3-characters (a part of the group determinant) determine the group. In this paper it is shown that the 2-characters do not determine the group. If we start with a group G of a certain type then a group H with the same 2-character table must form a Brauer pair with G . A complete
more » ... iption of such an H is available in Comm. Algebra 9 (1981), 627-640.
doi:10.2307/2159960 fatcat:2vxuyieo2rd7hbaamvernomza4