A Theorem Begarding a Sum of Differential-Coefficients . 319 
5. When we recall that Kronecker's theorem here used was discovered 
by him as a property of minors of an axisymmctric determinant, and that 
indeed it has not yet been formulated apart from this connection, the 
interest in the demonstration is greatly heightened. For example, to 
assert the vanishing of the first column of determinants in the preceding 
paragraph is the same as to say in reference to the axisymmetric 
determinant 
that 
^2 
■^'4 
202 
10. 
^^34 
^4 
o4 
1 
2 
3 
1 
2 
4 
1 
2 
5 
1 
2 
6 
4 
5 
6 
3 
5 
6 
+ 
3 
4 
6 
3 
4 
5 
0, 
where 
stands for the three-line minor whose elements are to be 
12 3 
,4 5 6 
found in the 1st, 2nd, 3rd rows and in the 4th, 5th, 6th columns. 
