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Past exam of the mathematics course of the year 2 of the natural sciences course of the University of Cambridge
/
2025
/
Paper 2
/
6
/
c
/
i
/
Solution
2026-10-18
View more
Relabel the two
dummy indices
and use the respective
symmetries
:
X
ij
A
ij
=
X
ji
A
ji
=
−
X
ij
A
ij
=
0.
(1)
Thus the
symmetric tensor
and
antisymmetric tensor
subspaces are
orthogonal
in the
Frobenius inner product
.
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