?? adjunction (?? ...) between modules of bialgebra and co-modules of dual bialgebra ??? .... ??? .... ?? hmmm, or vice versa ... ??? not clear how close to being the same .... ?? ...

?? fourier duality .... level slips ....

??? family resemblance between ... ?? geometric interpretation of toric quasicoherent sheaves, and ... ?? geometric rekationship between modules and co-modules .... ???? ...

?? confusion about continuous dual of discrete vs discrete dualk of discrete ....... ??? ....

??? "spin" manifesting as "dimension" ??? ...... ?????? ..... roots of unity .... ??? ....