Source: wikibot/j-invariant
= J-invariant
{wiki=J-invariant}
The \\( J \\)-invariant is an important quantity in the theory of elliptic curves and complex tori. In the context of elliptic curves defined over the field of complex numbers, the \\( J \\)-invariant is a single complex number that classifies elliptic curves up to isomorphism. Two elliptic curves are isomorphic if and only if their \\( J \\)-invariants are equal.