Explain the PGD matlab code and theory behind it -- 2

Job ID: 33400266

Budget: $10 – $30 USD

Proper generalized decomposition PGD is an order reduction technique.
The book attached below provides an implementation of PGD in matlab to solve Poisson equation in many variations.
I need someone to explain to me the matlab codes and the theory behind them. The successful bidder should possess deep knowledge on the topic of PGD. The explanation can be done through a zoom meeting in english or french or arabic.
Related categories: Algorithm Mathematics MATLAB