Pith. sign in
module module high

IndisputableMonolith.Foundation.SimplicialLedger.EdgeLengthFromPsi

show as:
view Lean formalization →

This module defines the log-potential assignment ε_i = ln ψ(σ_i) on vertices of the simplicial 3-complex. It supplies the discrete object that ContinuumBridge.laplacian_action and downstream Regge reductions rely on. Researchers closing the discrete-to-continuum gap in Recognition Science cite these definitions when moving from J-cost stationarity to the Einstein equations. The module consists entirely of supporting definitions and no top-level theorems.

claimThe log-potential is the map $\varepsilon : \mathrm{Fin}\, n \to \mathbb{R}$ given by $\varepsilon_i = \ln \psi(\sigma_i)$ on the vertices of the simplicial ledger; the associated edge-length field is obtained by the conformal ansatz $\ell_{ij} = \ell_0 \exp((\varepsilon_i + \varepsilon_j)/2)$.

background

The module belongs to the Foundation.SimplicialLedger hierarchy that replaces the cubic lattice with a coordinate-free simplicial 3-complex. Upstream, SimplicialLedger supplies the sheaf representation that unifies local and global J-cost variations, while ContinuumBridge proves that J-cost stationarity is equivalent to the Regge equations (up to the normalization $\kappa = 8\phi^5$). Constants fixes the RS time quantum $\tau_0 = 1$ tick.

The log-potential converts the psi field into edge-length data and is the identical object referenced by ContinuumBridge.laplacian_action. It therefore sits between the discrete ledger and the weak-field conformal reduction that appears in the gravity paper.

proof idea

this is a definition module, no proofs

why it matters in Recognition Science

The definitions feed the four-phase program that promotes the paper's Theorem 5.1 (field-curvature identity) to an unconditional Lean theorem. They are imported by ContinuumTheorem (Phase D), CubicDeficitDischarge (Phase A), SimplicialDeficitDischarge (Phase C5), CubicSimplicialEquivalence, NonlinearBridge, and WeakFieldConformalRegge. Without the log-potential the discrete-to-Regge step in the J-cost stationarity argument cannot be stated.

scope and limits

used by (6)

From the project-wide theorem graph. These declarations reference this one in their body.

depends on (4)

Lean names referenced from this declaration's body.

declarations in this module (18)