28. cech h1 genus
dim H¹(X, 𝒪) = g: cup-product kill, monotonicity, and the effective-divisor vanishing comparison.
5 modules, 1,093 lines, under Jacobians/H1Genus/.
References: Miranda Ch. X §2 · Forster §17.5 · Forster §17.4 · Forster §16-.