In the images below, there is a mathematical model written in the GAMS program. I want to write this model in MATLAB program and solve the problem in MATLAB. Examples of models in MATLAB, which I found on the Internet, include variables with a single index and basic constraints. I couldn't find any examples with constraints written with 'sum' expressions and decision variables with multiple indices.
What is the adaptation of this mathematical model to the MATLAB program? I would be glad if you help.