The Fermionic Matter Sub-Programme

Fermionic structure on supplied carriers, with every conditional bridge explicit.

Current Zenodo release: version 3.3 (2026-10-27, Zenodo record 23678669).

Overview

The bosonic spectral stratification ($a_2 \to$ gravity, $a_4 \to$ Yang–Mills) supplies a gauge–gravity architecture for a supplied compact structure group. Fermions, chirality, hypercharge, and the three-generation structure are not covered by that bosonic synthesis. The fermionic matter sub-programme answers: do they also arise from the projective framework, and which bridges must be supplied?

The answer given in FM-Note 3.3 is layered and conditional, and each layer names what it needs. On a supplied Heisenberg carrier, given a real metaplectic model and a supplied doublet, the algebra $\mathrm{mp}(2,\mathbb{R})_\mathbb{C} \simeq \mathfrak{sl}_2(\mathbb{C})$ is proved, with the symmetric square of the doublet its adjoint and the exterior square its determinant line; it uses no metric. The admissibility axioms do not select that carrier, and every result inherits it. Two physical readings of this algebra are distinct hypotheses, supplied by no source and excluded by none: [H-Spin], a Lorentzian spin solder identifying the $\mathrm{SL}(2,\mathbb{C})$ of the doublet with the spin group of a four-dimensional co-metric, and [H-Weak], a distinct rank-two weak factor $E_{\mathrm{weak}}$ with structure group $\mathrm{U}(2)$, which is not constructed. Lorentz chirality and the weak chiral selection ($V-A$) are different statements, and the second is not derived from the first. Hypercharge rigidity carries a supplied three-dimensional colour module, and the generation factor a supplied rank-three carrier. The independent fermionic weak doublet is not produced by the tensor functors of the spinor bundle, and its two deposited candidates are closed by the exact obstructions of the NSR no-go note; its realisation is an explicitly architectural open frontier. The Schur form of the projective residue concerns a compression remainder, which is the projective endomorphism only under a symbol identity that no source states; a non-zero generation split, its Schur transport and its Born–Infeld genus are hypotheses, and no mechanism for such a split is derived.

Layered status. Proved on supplied model data: the algebra and the tensor identities. Conditional on [H-Spin]: the spinor bundle, the Lorentz sector, the trivial line $\wedge^2(S_L)$ and Lorentz chirality (on an input branch). Conditional on [H-Weak]: the weak adjoint, the hypercharge line $L_Y = \wedge^2(E_{\mathrm{weak}})$ and the $V-A$ structure. Conditional on further supplied inputs: the rigidity of the hypercharge weights, the generation factor, and the mass-sector statements, which name their own hypotheses ([H-Res], [H-Sq], [H-Fac], [H-Grad]).
Scope statement. The sub-programme addresses the identification of the fermionic sector, not the mass spectrum. The mass spectrum, the Yukawa couplings and the CKM/PMNS mixing matrices remain open: the two mass-sector notes record hypotheses and structure, and no mass value.

The dictionary $F_n \overset{\mathrm{model}}{\simeq} \mathcal{H}_c$ is supplied. The Heisenberg carrier $\mathcal{H}_c$, its associated Weil block $V_c \simeq \mathbb{C}^q$, and the supplied spinor doublet $V_\rho \simeq \mathbb{C}^2$ are distinct; no map selecting the doublet is supplied. Connection-dependent admissible readings retain Q6a’s two unproved continuum hypotheses: a smooth effective fibre bundle and a differentiable spatial continuum, the latter open in Q5a.

Structural chain

$$ F_n \overset{\mathrm{model}}{\simeq} \mathcal{H}_c \;\overset{\text{model}}{\rightsquigarrow}\; \mathrm{Mp}(2,\mathbb{R}) \;\Rightarrow\; \mathrm{mp}(2,\mathbb{R})_\mathbb{C} \simeq \mathfrak{sl}_2(\mathbb{C}) \;\overset{[\text{H-Spin}]}{\rightsquigarrow}\; \mathrm{Spin}(3,1) \simeq \mathrm{SL}(2,\mathbb{C}) \;\Rightarrow\; \mathcal{S}_\Pi. $$

The carrier dictionary and the real metaplectic model are supplied, and the arrow marked [H-Spin] is not an implication. Then:

Core results (Q14 3.3, as organised in FM-Note 3.3)

Constituent papers

Position within Cosmochrony

The fermionic matter sub-programme sits at the apex of Branch III. It is the first paper of the Q-series that depends simultaneously on all upstream layers of the programme:

Open deliverables

References

Beau, J. The Fermionic Matter Sub-Programme (Presentation Note 6). Version 3.3, 2026. https://doi.org/10.5281/zenodo.20562665