42 
MR. A. B. KEMPE ON THE THEORY OF MATHEMATICAL FORM. 
(S),= 
/ 3 \ 3 . 4 / 6\3 
\4/ 3l2/ 5 ^ 
T 2 = a 
b 
c 
d 
e 
f 
9 
h 
i 
j 
k 
l 
b 
c 
d 
e 
f 
a 
h 
i 
j 
k 
l 
9 
c 
d 
e 
f 
a 
b 
i 
j 
k 
l 
9 
h 
d 
e 
f 
a 
b 
c 
j 
k 
l 
9 
h 
i 
e 
f 
a 
b 
c 
d 
k 
l 
9 
h 
i 
j 
f 
a 
b 
c 
d 
e 
l 
9 
h 
i 
j 
k 
9 
h 
i 
j 
k 
l 
a 
b 
c 
d 
e 
f 
h 
i 
j 
k 
l 
9 
b 
e 
d 
e 
f 
a 
i 
j 
k 
l 
9 
h 
c 
d 
e 
f 
a 
b 
j 
k 
l 
9 
h 
i 
d 
e 
f 
a 
b 
c 
k 
l 
9 
h 
i 
j 
e 
f 
a 
b 
c 
d 
l 
9 
h 
i 
j 
k 
f 
a 
b 
c 
d 
e. 
T 3 — a 
b 
c 
d 
e 
f 
9 
h 
i 
j 
k 
l 
b 
c 
d 
e 
f 
a 
h 
i 
j 
k 
l 
9 
c 
d 
e 
f 
a 
b 
i 
j 
k 
l 
9 
h 
d 
e 
f 
a 
b 
c 
j 
k 
l 
9 
h 
i 
e 
f 
a 
b 
c 
d 
k 
l 
9 
h 
i 
j 
f 
a 
b 
c 
d 
e 
l 
9 
h 
i 
j 
k 
9 
l 
k 
j 
i 
h 
a 
f 
e 
d 
c 
b 
h 
9 
l 
k 
j 
i 
b 
a 
f 
e 
d 
c 
i 
h 
9 
l 
k 
j 
c 
b 
a 
f 
e 
cl 
j 
i 
h 
9 
l 
k 
d 
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b 
a 
f 
e 
k 
j 
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h 
9 
l 
e 
d 
c 
b 
a 
f 
l 
k 
j 
i 
h 
9 , 
f 
e 
d 
c 
b 
a. 
T 4 =a be defghijkl 
b a cl c j i l k f e h g 
cdbaghfe k l j i 
d c a b l k i j h g e f 
e f g h i j k l abed 
f e h g b a d c j ilk 
g h f e k l j i c d b a 
hgefdcab l k i j 
i j klabcdefgh 
j i l kfe hg bade 
k l j i cdbaghfe 
l k i j hgefdcab. 
