Remark 63.16.3. Even though all we did are reductions and mostly algebra, the trace formula Theorem 63.16.1 is much stronger than Weil's geometric trace formula (Theorem 63.14.4) because it applies to coefficient systems (sheaves), not merely constant coefficients.

In your comment you can use Markdown and LaTeX style mathematics (enclose it like $\pi$). A preview option is available if you wish to see how it works out (just click on the eye in the toolbar).