d-modules and coherent sheaves over certain orbit stacks... lie derivative vs covariant derivative... and so forth... big commutative diagram ... ??...
??algebraic geometric theory of "affine line's worth of line objects, equipped with nice way to tensor them riding the addition structure" ... ??also case of abelian variety here (...) ??? and so forth???....
??possibly also stuff about passage to derived category... from "doctrine" viewpoint... and so forth ... ??...
??maybe something about limits vs colimits of dimensional theories?? ... and so forth...
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