Selling Math as NFT's

Could I sell you a math problem? Could you sell me one? How could this be done. In this video I discuss these things and the idea of selling mathematical objects (proofs, equations, etc.) at NFT's.

Everything is being sold as an NFT these days, even contracts and tweets. These ate reduced to mathematical objects. My question is: why not sell the mathematical objects themselves...if they are unique and mintable? What would their value be?

I open the concept and discussion in this video.