Dear MJ,
   Also if you plan on including your code in Sage (which it sounds like 
you are, +1!), it would be a good idea to break the code into smaller 
pieces to help facilitate and easier review. For example, the algebra 
itself can be one ticket. Feel free to also cc me (by using tscrim) on the 
tickets.

Best,
Travis


On Sunday, March 31, 2019 at 4:03:27 AM UTC+10, Michael Jung wrote:
>
> My dear developers,
> right now, I'm working on my master thesis and my task is to implement 
> characteristic classes (of the tangent bdl. of a manifold), such as the 
> A-genus, into Sage. The implementation shall be based
> upon this 
> <https://www.math.uni-potsdam.de/fileadmin/user_upload/Prof-Geometrie/Dokumente/Lehre/Lehrmaterialien/charakteristisch.pdf>
>  
> piece of work by my supervisor. Briefly, one can compute the classes out of 
> the curvature matrix and the corresponding power series.
>
> So far, I've implemented the graded algebra of mixed differential forms 
> and the next step will be the matrix framework for the desired classes.
>
> However, it might also be convenient to implement some methods into 
> manifolds/differentiable/manifold.py directly.
>
> Is this idea worth a ticket? You wanna see the code I've done so far?
>
> Cheers,
> YoungMath
>

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