Pith Number

pith:ET6CLM3H

pith:2015:ET6CLM3H3XUOABJ5VAIBFV2SIN

not attested not anchored not stored refs pending

More Than 1700 Years of Word Equations

Volker Diekert

arxiv:1507.03215 v1 · 2015-07-12 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ET6CLM3H3XUOABJ5VAIBFV2SIN}

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.

Receipt and verification

First computed	2026-05-18T01:36:59.386032Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24fc25b367dde8e0053da81012d7524347fb38fd44443c27e8368390fa890874

Aliases

arxiv: 1507.03215 · arxiv_version: 1507.03215v1 · doi: 10.48550/arxiv.1507.03215 · pith_short_12: ET6CLM3H3XUO · pith_short_16: ET6CLM3H3XUOABJ5 · pith_short_8: ET6CLM3H

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/ET6CLM3H3XUOABJ5VAIBFV2SIN \
  | 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: 24fc25b367dde8e0053da81012d7524347fb38fd44443c27e8368390fa890874

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a21c34dcca0db20f91523e5d43ecd5ddf9f3835ebd072f63d4d144c366a3a048",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2015-07-12T10:23:09Z",
    "title_canon_sha256": "cdb6381aeee2f2bc777c193e96770e3bebdeff943faf1ae588b1967de08ba9b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.03215",
    "kind": "arxiv",
    "version": 1
  }
}