Primitive differential form on a Kähler manifold
= Primitive differential form on a Kähler manifold
= Primitive differential forms on a Kähler manifold
{synonym}
For degree $k\leq n$, a form is primitive if $\Lambda\alpha=0$, equivalently $L^{n-k+1}\alpha=0$. In middle degree $k=n$ this is equivalent to $L\alpha=0$. On a compact <Kähler manifold>, the same definitions apply to cohomology via <harmonic differential forms>.