This matrix is sized at
M*M and subscripts are indexed by
(m-n,n). And I need to input subscripts into function as arguments.
I got this idea because I know the
List in Mathematica can operate listablly. But I'm not sure this kind of subscripts is achievable.
Basically speaking, all I need to do is just to input subscripts(i.e.
(m-n,n)) as arguments and fetch the results(i.e.
Lambda(x,y)) to save them into this matrix at corresponding position. But how can I assign these specific subscripts to elements?