?? so _does_ "direct sum" of bistable hopf algs correspond to multiplication of associated categorified zeta functions ??? .... ???? .... ?? work it out ...

?? even if it does, hard to see how could account for characteristically (...) weird coefficients of l-fn ... ??? unless ... ?? decategorification process used is somehow weirder than ... what it seems to be in the zeta function case .... ??? .... ??? .....

?? underlying additive algebraic (abelian) group of algebraic comm ring .... "direct sum" decomposition of that algebraic abelian group .... ??? ...

?? "algebraic direct sum" .... ???? tensor product .... ???? ......

?? hopf alg and fourier duality .... ???? .....

?? categorified zeta function with f_q-vsp coefficients .... ??? relating in some way to "green type" .... ???? .... ???? ..... ??? vague memories about thinking about stuff like ... ?? to what extent idea of substituting something (????) into dirichlet series makes (categorified ... ??? ...) sense .... ???? ....