Talk:Foundations of Computational Materials Science/Introduction to Quantum Mechanics

Why doesn't the $${{\Lambda }_{n}}{{E}_{n}}{{\phi }_{n}}$$ part wanishes? It is on both sides.

Where does $$\frac{m}\int_{\left( \phi _{k}^{*}{{\nabla }_}{{\phi }_{l}}{{d}^{3N}}r \right)}{{\nabla }_}$$ come from?