Pith Number

pith:OC7HEPHB

pith:2021:OC7HEPHBGAERRG6LAP7BR3HSRD

not attested not anchored not stored refs pending

On Incorrectness Logic and Kleene Algebra with Top and Tests

Arthur Azevedo de Amorim, Cheng Zhang, Marco Gaboardi

arxiv:2108.07707 v4 · 2021-08-17 · cs.PL · cs.CL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OC7HEPHBGAERRG6LAP7BR3HSRD}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

Kleene algebra with commutativity conditions is undecidable

Receipt and verification

First computed	2026-07-05T04:46:11.831397Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

70be723ce13009189bcb03fe18ecf288fb20a96df3d6921b880b48f04bcb2ef8

Aliases

arxiv: 2108.07707 · arxiv_version: 2108.07707v4 · doi: 10.48550/arxiv.2108.07707 · pith_short_12: OC7HEPHBGAER · pith_short_16: OC7HEPHBGAERRG6L · pith_short_8: OC7HEPHB

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/OC7HEPHBGAERRG6LAP7BR3HSRD \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 70be723ce13009189bcb03fe18ecf288fb20a96df3d6921b880b48f04bcb2ef8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13f88d866dffdc6d021815d137d8f18d9274d4699fa7d7437e3ff31457e03c95",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2021-08-17T15:50:21Z",
    "title_canon_sha256": "81a9b9ba4883f061cff4c48682ff02e29cfe5822523af5538166e0b206cc3300"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.07707",
    "kind": "arxiv",
    "version": 4
  }
}