Source: https://guthlabs.ai/docs/instruments/graph-plotter-2d-function/qualification/

instrument qualification / verified-with-binding-errata

# Graph Plotter — 2D Function qualification

Verified with errata that must be applied at binding time.

Status: **VERIFIED_WITH_ERRATA**Lifecycle: **verified-with-binding-errata**

## Ledger verdict

Verified with errata that must be applied at binding time.

**Status**: VERIFIED_WITH_ERRATA

**Tranche**: tranche-8

**Review vectors**: 4

**Ledger rows**: 1

## Applied errata

````
[
  {
    "vector": 4,
    "field": "plot_samples y-values (all 5 finite points)",
    "wrong": "2.0, 10.0, 100.0, -100.0, -10.0, -2.0",
    "correct": "-2.0, -10.0, -100.0, 100.0, 10.0, 2.0 (every sign flipped)",
    "cause": "own working computes each value correctly (e.g. 'y=1/(-0.5)=-2; correction: ... the mathematical value is -2, not +2') and then ships the wrong sign for literally every non-asymptote sample in the vector"
  }
]
````

## Adversarial re-test context

The full catalog was re-tested from boundary, convention, and self-check angles in 2,787 requests. Five genuine computational defects were independently verified and corrected. This page reports the current ledger state for this instrument; it does not imply product deployment or interface qualification.

## Release gate

Bind every attached correction, replay the affected vectors, enforce boundary validation, and preserve evidence before describing the executable surface as qualified.

## Other records

[01**Overview**](<https://guthlabs.ai/docs/instruments/graph-plotter-2d-function/>)[02**Mechanism**](<https://guthlabs.ai/docs/instruments/graph-plotter-2d-function/mechanism/>)[03**Implementation**](<https://guthlabs.ai/docs/instruments/graph-plotter-2d-function/implementation/>)

## Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

- `VERIFIED_LEDGER.json`

- `STRESS_TEST_RECEIPT.json`

- `tranche errata record`