Riemannian holonomy group (source code)

= Riemannian holonomy group
{c}
{title2=$\operatorname{Hol}_p(g)\subset O(T_pM,g_p)$}

For a connected <Riemannian manifold>, the full holonomy group consists of <parallel transport> maps around all piecewise smooth loops based at $p$. Metric compatibility makes them orthogonal. Basepoint changes conjugate this group by parallel transport. This is full holonomy, not just the subgroup using contractible loops.