Derived Gamma Geometry II: Stable $\infty$-Categories of Gamma-Modules, Derived Monoidal Structures, and Obstructions to Binary Shadows
Abstract: Let (\T) be a commutative ternary (\Gm)-semiring in the sense of the triadic, (\Gm)-parametrized multiplication ({a,b,c}_γ). Building on the affine (\Gm)-spectrum (\SpecG(\T)), the structure sheaf, and the equivalence between (\Gm)-modules and quasi-coherent (\Gm)-sheaves on affine (\Gm)-schemes, we construct and organize the derived formalism at the level of stable (\infty)-categories. Our first contribution is a technically explicit construction of a stable (\infty)-category (\Dinfty(\T,\Gm)) enhancing the unbounded derived category of (\Gm)-modules, obtained by dg-nerve and (\infty)-localization of chain complexes. We further explain the derived monoidal structure induced by the ternary (\Gm)-tensor product and the corresponding internal (\RHom), under standard exactness/projectivity hypotheses. Our second contribution is an obstruction theory to \emph{binary reduction}: we formalize the nonexistence of any conservative ``binary module shadow'' compatible with the cubic localization calculus intrinsic to ternary (\Gm)-semirings. In particular, any attempt to represent the triadic (\Gm)-action by binary scalars forces (\Gm)-mode data to be absorbed into the scalars, hence ceases to be a genuine reduction. Finally, we give a detailed affine derived equivalence between derived quasi-coherent (\Gm)-sheaves on (X=\SpecG(\T)) and (\Dinfty(\T,\Gm)), and we include worked examples illustrating the cubic localization relation and its derived consequences.
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