An upper bound for the size of a $k$-uniform intersecting family with covering number $k$

Let $r(k)$ denote the maximum number of edges in a $k$-uniform intersecting family with covering number $k$. Erd\H{o}s and Lov'asz proved that $ \lfloor k! (e-1) \rfloor \leq r(k) \leq k^k.$ Frankl, Ota, and Tokushige improved the lower bound to $r(k)\ge {\left(k\mathrm{/}2\right)}^{k-1}$, and Tuza improved the upper bound to $r(k)\le (1-e^{-1}+o(1))k^k$. We establish that $ r(k) \leq (1

• o(1)) k^{k-1}$.