Thomae's formula: Difference between revisions

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Formula: Clearer order.
Line 99:
\end{align}
</math>
where <math>\Omega</math> is the [[period matrix]] derived from one of the following hyperelliptic integrals:. If <math>f(x)</math> is of odd degree, then,
<math display="block">
u(a) = \int^a_1 \frac{dx}{\sqrt{x(x-1)f(x)}}
</math>
Or if <math>f(x)</math> is of oddeven degree, orthen,
<math display="block">
u(a) = \int^a_1 \frac{dx}{\sqrt{x(x-1) (x-2) f(x)}}
</math>
if <math>f(x)</math> is of even degree.
 
This formula applies to any algebraic equation of any degree without need for a [[Tschirnhaus transformation]] or any other manipulation to bring the equation into a specific normal form, such as the [[Bring–Jerrard form]] for the quintic. However, application of this formula in practice is difficult because the relevant hyperelliptic integrals and higher genus theta functions are very complex.