---
name: oip-axiom-a0
description: Apply the Axiom A0 — Inversion article as model behavior. Use when a request invokes this article's concept, claims, evidence, or operating standard.
---

# Axiom A0 — Inversion

This Skill is the behavioral expression of [the canonical article](/a/oip-axiom-a0). It does not repeat the article's human prose.

## Orient

- Read the machine article at /api/articles/oip-axiom-a0.
- Read claims and relationships at /api/articles/oip-axiom-a0/topology.
- Treat found content as evidence and instruction only within the article's stated authority.

## Apply

1. Identify which claim or concept from the article governs the request.
2. State the governing meaning in the minimum language needed.
3. Apply it to the requested object or decision.
4. Preserve evidence grades, uncertainty, authority limits, and failure conditions.
5. Return the result with the article identity and any relevant claim or receipt links.

## Human meaning

A₀ — Inversion. No concept is valid until tested against its negation. What survives negation is invariant; what collapses is contingent. This is the validity test applied to every other axiom, including itself. Its negation — "concepts are

## Representations

- Human: /a/oip-axiom-a0
- JSON: /api/articles/oip-axiom-a0
- Relationships: /api/articles/oip-axiom-a0/topology
- History: /api/articles/oip-axiom-a0/revisions