Strongly monotone operator ($⟨A(u)-A(v),u-v⟩\ge m\Vert u-v{\Vert }^2,m>0$)

A map from a subset of a real Banach space to its continuous dual space is strongly monotone if the displayed inequality holds for every pair in its domain, with one constant $m>0$. The brackets denote the dual pairing. This implies strict monotonicity for distinct arguments. Fixing $v=u_0$ and applying the dual norm inequality gives $⟨A(u),u-u_0⟩\ge m\Vert u-u_0{\Vert }^2-\Vert A(u_0)\Vert \Vert u-u_0\Vert$, so it is a nonlinear coercive operator with respect to $u_0$.