2 problems

Let $V_h\subset[H^1(\Omega)]^3$ be constructed with continuous Lagrange elements of degree $k$. Let $\Sigma_h\subset H^1(\operatorname{curl},\Omega)$ be the space preceding $V_h$ i…

Let $V_h$ be constructed with continuous Lagrange elements of degree $k$, and choose $\Pi_h={{\nabla\cdot}\,}V_h$. The inf-sup condition is the existence of a constant $\beta>0$ su…