ELIMINANT OF A SET OF GENERAL TERNARY QUADRICS. 397 
Had we used the operation M,+2 M’, we should have obtained the alternative form 
ee 2 ee 
4 
67 
TY Bee 
= 
48 Que 6! 
4-2) 5-3' 6-1’ 0-20’ 
In this case, however, the two forms are not even superficially different, the one being 
obtainable from the other by changing rows into columns and attending to the 
identities 
26=80 4, 8407) doe: 
or, 
16Q = B67 = sis = 78), 
