Adverb
In a conformal manner
With regard to a conformality
Source: en.wiktionary.orgAs a corollary of the theorem, any two simply connected open subsets of the Riemann sphere which both lack at least two points of the sphere can be conformally mapped into each other (because conformal equivalence is an equivalence relation). Source: Internet
This allowed him to find an explicit formula for the conformally invariant Green's function on a 4-manifold. Source: Internet