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468 PHILLIP A. GRIFFITHS<br />

Kfihler form on (I N pulled back to N[r] becomes<br />

b= /-1 (<br />

The volume form on ([N is<br />

N<br />

We shall iterate the volume integral on N[r]; thus setting<br />

we find<br />

(z, r) j Itll<br />

O(z, t)<br />

vol rr(M) I qt(z, r).<br />

To evaluate the right hand side we fix z, assume as we may that our moving<br />

frame has been chosen so that o.(z) 0 (this is convenient but not essential),<br />

and set<br />

dt dtn + A A diN<br />

o o, A Aro.<br />

h(t).<br />

h(t)Ao-<br />

k!<br />

det(h(t),)<br />

where A (o1, o, Ok) and D (31, ", 3k) are index sets<br />

(1, ., n). Denoting by A the index set complementary to A,<br />

selected from<br />

A 49. +- h(t)AOOAO A<br />

A,D<br />

13<br />

B,C<br />

where it is understood that the summation is over index sets having the same<br />

number of elements. It follows that<br />

For/x (/zl, ",/xk) with/xl

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