Mugnolo's First Example
A balalaika-shaped graph
The basic graph
Calculate and display the first few eigenvalues and eigenfunctions;
Phi1= quantumGraphFromTemplate('balalaika',Lvec=L,discretization='Chebyshev');
[V1,d1]=Phi1.eigs(numEigs);
title(sprintf('$\\omega_{%i} = %0.3f$',k,d1(k)))