 Grothendieck–Riemann–Roch theorem

The Grothendieck–Riemann–Roch theorem is a fundamental result in algebraic geometry and algebraic topology that extends classical Riemann–Roch theorems for curves to more general situations, particularly for algebraic varieties. The theorem originates from the work of Alexander Grothendieck in the 1950s and provides a powerful tool for calculating the dimensions of certain cohomology groups.