Change < > to \langle \rangle

Let's see if this fixes it.
Thanks to Emmanuel Kowalski and Pieter Belmans
http://stacks.math.columbia.edu/tag/03W3#comment-867
http://stacks.math.columbia.edu/tag/03W3#comment-868

etale-cohomology.tex

@@ -15149,7 +15149,7 @@ \section{Preliminaries and sorites}
 $$
 1 =
 \sum\nolimits_{
-\frac{\sigma\text{-conjugacy}}{\text{classes}\left<\gamma\right>}
+\frac{\sigma\text{-conjugacy}}{\text{classes}\langle\gamma\rangle}
 }
 \frac{1}{\# Z_\gamma} \mod{\ell}.
 $$
@@ -17359,10 +17359,10 @@ \section{Precise form of Chebotarev}
 (2g_X - 2) d_\pi^2\sqrt{q^n}
 $$
 Write $1_C = \sum_\pi a_\pi \chi_\pi$, then
-$a_\pi = \left<1_C, \chi_\pi\right>$, and
-$a_1 = \left<1_C, \chi_1\right> = \frac{\# C}{\# G}$ where
+$a_\pi = \langle1_C, \chi_\pi\rangle$, and
+$a_1 = \langle1_C, \chi_1\rangle = \frac{\# C}{\# G}$ where
 $$
-\left<f, h\right> = \frac{1}{\# G}\sum_{g \in G} f(g)\overline{h(g)}
+\langle f, h\rangle = \frac{1}{\# G}\sum_{g \in G} f(g)\overline{h(g)}
 $$
 Thus we have the relation
 $$