= Solar rotational mode splitting
{title2=$\delta\omega_{n\ell m}\simeq m\int K_{n\ell m}\Omega\,dV$}
Slow <stellar rotation> breaks the azimuthal degeneracy of a <stellar oscillation>. First-order rotational <frequency> shifts are weighted <integrals> of the angular velocity with kernels computed from the unperturbed mode. Multiple radial orders and angular degrees provide overlapping constraints on internal rotation. Surface rotation alone cannot replace these internal measurements, and a finite kernel set does not give pointwise uniqueness.
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