Neuro-Symbolic AI • Mathematical Physics • November 15, 2026

Cohomological and Thermodynamic Guardrails for Causal World Models: A Neuro-Symbolic Architecture for Verifiable Scientific Intelligence

GENERIC Latent Manifold Dynamics, Weil–Li Positivity, Cellular Sheaf Cohomology Obstructions, and Type-Theoretic Grounding
Peter De Ceuster November 15, 2026 12-Page Foundational Monograph (PDF) Sig Labs / peterdeceuster.uk
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Executive Abstract

Contemporary foundation models operate predominantly as stateless, dissipative autoregressive token predictors lacking intrinsic representations of physical conservation laws, global causal consistency, or formal mathematical truth. In our recent perspective on the two-hundred-year trajectory of artificial intelligence to 2226, we argued that stateless token prediction will yield to continuously learning, causal world models tightly coupled with formal theorem provers, rendering mathematical and physical hallucination structurally unrepresentable within the verified subspace.

$$\dot{z} = L(z) \nabla_z E(z) + M(z) \nabla_z S(z), \quad L(z) = -L(z)^T, \quad M(z) \succeq 0, \quad L(z)\nabla S = 0, \quad M(z)\nabla E = 0$$

Here, we construct the explicit mathematical and algorithmic architecture required to realize this synthesis. First, we constrain continuous neural latent trajectories on a state manifold $\mathcal{M}$ using the non-equilibrium thermodynamic GENERIC formalism, pairing skew-symmetric Poisson operators $L(z)$ (encoding Casimir and topological gauge invariants such as $d(*F - \theta F - J_s) = 0$) with symmetric positive-semidefinite friction operators $M(z) \succeq 0$ parameterized via Weil–Li quadratic positivity functionals. Second, generalizing the de Rham exactness condition $[J_s]_{\text{dR}} = 0$ and cohomology obstruction classes $\omega(\eta)$ from our extended electrodynamics framework, we organize distributed local causal models as sections of a cellular sheaf $\mathcal{F}$ over a simplicial context complex $\mathcal{K}$, showing that global causal consistency without contradiction is equivalent to the vanishing of the first cohomology group $H^1(\mathcal{K}; \mathcal{F})$.

Architectural Guardrail Foundations

1. GENERIC Manifold Dynamics
Rigorous split of reversible Hamiltonian dynamics (skew-symmetric Poisson $L$) and dissipative irreversibility (positive-semidefinite $M$), guaranteeing energy conservation $\dot{E} = 0$ and monotonic entropy $\dot{S} \ge 0$.
2. Weil–Li Positivity Functional
Parameterization of dissipative friction tensors via positive-definite spectral kernels derived from Weil–Li quadratic forms, structurally precluding unphysical anti-thermodynamic entropy sinks.
3. Sheaf Cohomology Obstructions
Distributed causal contexts glued via cellular sheaf $\mathcal{F}$ over relational complex $\mathcal{K}$. Hallucinations correspond precisely to non-trivial cocycles in $H^1(\mathcal{K}; \mathcal{F})$ and are quenched via Sheaf Laplacian harmonic projection.
4. Categorical Type-Theoretic Grounding
Motivic realization functors mapping latent causal states to inductive propositions verified inside kernel theorem provers (Lean 4 / Coq), providing zero-hallucination mathematical certainty.

Paradigm Comparison: Autoregressive Transformers vs. PINNs vs. Cohomological Causal World Models

Capability Dimension Autoregressive Transformer Physics-Informed NN (PINN) Cohomologically Guarded World Model
Representation Substrate Discrete token sequence Continuous coordinate MLP Continuous Lie/GENERIC manifold $\mathcal{M}$
Conservation Laws Unconstrained (Statistical only) Soft penalty loss ($\mathcal{L}_{\text{physics}}$) Hard structural Lie/Poisson bracket Casimirs
Thermodynamic 2nd Law Can generate anti-thermodynamic loops Approximate residual minimization Strictly enforced: $\dot{S} = (\nabla S)^T M(z) \nabla S \ge 0$
Global Consistency Check None (Susceptible to drift & contradiction) Boundary loss evaluation Sheaf Cohomology Criterion: $H^1(\mathcal{K}; \mathcal{F}) = 0$
Formal Mathematical Truth Probabilistic token hallucination Not applicable Motive realization functor into Lean 4 / Coq
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BibTeX Reference

@article{DeCeuster2026CausalWorldModels,
  author    = {Peter De Ceuster},
  title     = {Cohomological and Thermodynamic Guardrails for Causal World Models: A Neuro-Symbolic Architecture for Verifiable Scientific Intelligence},
  journal   = {Sig Labs Neuro-Symbolic Systems & Mathematical Physics Series},
  year      = {2026},
  month     = {November},
  day       = {15},
  url       = {https://peterdeceuster.uk/pen/causal-world-models.html},
  note      = {Published on peterdeceuster.uk/pen/causal-world-models.html}
}