EN
Let g ≥ 2 be an integer and $𝓡_g ⊂ ℕ$ be the set of repdigits in base g. Let $𝓓_g$ be the set of Diophantine triples with values in $𝓡_g$; that is, $𝓓_g$ is the set of all triples (a,b,c) ∈ ℕ³ with c < b < a such that ab + 1, ac + 1 and bc + 1 lie in the set $𝓡_g$. We prove effective finiteness results for the set $𝓓_g$.