### fixed LaTeX equation URL

 ... ... @@ -61,7 +61,7 @@ Import libraries. We use the ncon interface, provided in TensorNetwork, for calc __Cell 2:__ def build_hamiltonian(): Here we build the pairing Hamiltonian following the same logic as in testing_tensorflow_v2. The difference is that we have included delta functions delta2B() and deltaPB() that decide the value of the matrix element defined by the input single particle states. The deltaPB() function gives us matrix elements defined by a new pair-breaking/-creating term we have introduced to couple off-diagonal blocks of the Hamiltonian (e.g. 0p-0h couples to 1p-1h, 1p-1h couples to 2p-2h). This term is written as ![equation](https://latex.codecogs.com/gif.latex?f_\text{p-break}&space;=&space;\frac{f}{2}\sum_{p'\ne&space;p,q}\left(a^\dag_{p',+1}&space;a^\dag_{p,-1}a_{q,-1}a_{q,+1}&space;+&space;a^\dag_{q,+1}a^\dag_{q,-1}a_{p,-1}a_{p',+1}&space;\right). ![equation](https://latex.codecogs.com/gif.latex?f_\text{p-break}&space;=&space;\frac{f}{2}\sum_{p'\ne&space;p,q}\left(a^\dag_{p',+1}&space;a^\dag_{p,-1}a_{q,-1}a_{q,+1}&space;+&space;a^\dag_{q,+1}a^\dag_{q,-1}a_{p,-1}a_{p',+1}&space;\right)). __Cell 3:__ Functions that define occupation tensors in the same way as testing_tensorflow_v2. We provide the option to treat each occupation tensor as a rank equal to either the same number of indices that appear in the equation within the text, or a rank twice that number of indices. ... ...