We study the Hodge numbers of Landau-Ginzburg models as defined by Katzarkov, Kontsevich and Pantev. First we show that these numbers can be computed using ordinary mixed Hodge theory, then we give a concrete recipe for computing these numbers for the Landau-Ginzburg mirrors of Fano threefolds. We finish by proving that for a crepant resolution of a Gorenstein toric Fano threefold $X$ there is a natural LG mirror $(Y,\mathsf{ w})$ so that $h^{ p,q}(X) = f^{ 3-q,p}(Y,\mathsf{ w})$.

Categories: math.AG

Hodge numbers of Landau-Ginzburg models