# Reaction network model assurance plugin

Family 149: Classwise permanence for weakly reversible mass-action systems. First application triage, 9 October 2026 Australia/Brisbane.

## Problem and potential new use

Chemical modeling teams can screen weak reversibility and record qualitative boundedness and persistence of constant-rate mass-action systems.

## Applicability and commercial boundary

The newer classwise common absorbing-set claim is broader than the older formal initial-state-dependent bounds. No explicit concentrations or entry times follow from the inspected qualitative statements.

## Initial business decision

Research or conditional engineering only until an effective implementation and a recurring buyer problem are identified. No commercial demand or profitability is established. Where a direct product bridge is weak, the legitimate use is a research reference or evidence adapter, rather than a new standalone company.

## Next verification action

Extend opportunity 013 with exact class/rate/source-version obligations and check the structural graph algorithm.

## Evidence scope

The catalog statement was individually reviewed. Main-paper abstracts and available selected formal scopes were additionally inspected; explicit effectiveness passages were inspected for 076, 143 and 178. No independent proof verification was run. Pinned source revision `fd4aeeb2ee4fc729c18d98444fed42fd0529eeeb`. See [source metadata](source.json).

[Uniform Permanence in Weakly Reversible Mass-Action Systems](https://github.com/openai/math/blob/fd4aeeb2ee4fc729c18d98444fed42fd0529eeeb/preprints/Uniform-Permanence-in-Weakly-Reversible-Mass-Action-Systems-October-5-2026/permanence.pdf).