Characteristic Epsilon Cycles of $\ell$-adic Sheaves on Varieties

Daichi Takeuchi

Let $X$ be a smooth variety over a finite field ${\mathbb{F}}_q$. Let $\ell$ be a rational prime number invertible in ${\mathbb{F}}_q$. For an $\ell$-adic sheaf $\mathcal{F}$ on $X$, w…