Math paper doesn't look very good...

I added this "supportive math" paper so that it could be referenced by Alice in the our paper. It is made from a google doc, which has a quite a bit of math with math symbols. These did not come over properly in the my publication; possibly I messed that up.

https://github.com/helpfulengineering/OKF-SCIS/blob/main/supportive-math/MathematicalDescriptionofSupplyChainInteroper.md