html">7. Eigenvalues and Eigenvectors: Properties</a></li>
    <li><a class="dropdown-item" href="../articles/a8-eigen-ex2.html">8. Eigenvalues: Spectral Decomposition</a></li>
    <li><a class="dropdown-item" href="../articles/a9-linear-equations.html">9. Solving Linear Equations</a></li>
    <li><a class="dropdown-item" href="../articles/aA-gramreg.html">10. Gram-Schmidt Orthogonalization and Regression</a></li>
    <li><a class="dropdown-item" href="../articles/aB-data-beta.html">11. Vector Spaces of Lea