English

Sheaf Theory and Derived Gamma Geometry over the Non-Commutative Gamma Spectrum

Rings and Algebras 2025-12-02 v1

Abstract

We develop the geometric and homological framework for non-commutative nn-ary Γ\Gamma-semirings by constructing a sheaf and derived theory over their non-commutative Γ\Gamma-spectrum. Starting with a non-commutative nn-ary Γ\Gamma-semiring (T,+,Γ,μ)(T,+,\Gamma,\mu) and its bi-Γ\Gamma-modules, we define the space \SpecΓnc(T)\Spec_{\Gamma}^{\mathrm{nc}}(T), equip it with a Zariski-type topology, and build the structure sheaf O\SpecΓnc(T)\mathcal{O}{\Spec{\Gamma}^{\mathrm{nc}}(T)} via localization at prime Γ\Gamma-ideals. We introduce quasi-coherent Γ\Gamma-sheaves, show that their category is exact with enough injectives, and interpret the derived functors \ExtΓ\Ext^{\Gamma} and \TorΓ\Tor^{\Gamma} as global cohomological invariants on this non-commutative Γ\Gamma-space. On the derived side, we construct the category D(\QCoh(\SpecΓnc(T)))\mathbf{D}(\QCoh(\Spec_{\Gamma}^{\mathrm{nc}}(T))), establish a local--global principle for \ExtΓ\Ext^{\Gamma} and \TorΓ\Tor^{\Gamma}, and prove a non-commutative local duality theorem assuming a dualizing complex. We further introduce derived non-commutative Γ\Gamma-stacks and a dg-enhancement of the spectrum, giving a spectral and motivic interpretation of homological invariants. Structural consequences include a Wedderburn--Artin type decomposition in the nn-ary Γ\Gamma-setting, a derived Morita theory for semisimple nn-ary Γ\Gamma-semirings, and a duality between the primitive Γ\Gamma-spectrum and simple objects of the derived category. These results extend our earlier commutative derived Γ\Gamma-geometry to a fully non-commutative nn-ary context.

Keywords

Cite

@article{arxiv.2512.00216,
  title  = {Sheaf Theory and Derived Gamma Geometry over the Non-Commutative Gamma Spectrum},
  author = {Chandrasekhar Gokavarapu},
  journal= {arXiv preprint arXiv:2512.00216},
  year   = {2025}
}