Pith Number

pith:EQULDUPM

pith:2011:EQULDUPM4BISNGULLZQX5QW666

not attested not anchored not stored refs pending

Tackling the Trefoils

Roger Fenn

arxiv:1110.0582 v1 · 2011-10-04 · math.GT · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EQULDUPM4BISNGULLZQX5QW666}

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	2026-05-18T04:11:41.459334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2428b1d1ece051269a8b5e617ec2def7a2b596a1329dca233a9537085f7cde8b

Aliases

arxiv: 1110.0582 · arxiv_version: 1110.0582v1 · doi: 10.48550/arxiv.1110.0582 · pith_short_12: EQULDUPM4BIS · pith_short_16: EQULDUPM4BISNGUL · pith_short_8: EQULDUPM

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/EQULDUPM4BISNGULLZQX5QW666 \
  | 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: 2428b1d1ece051269a8b5e617ec2def7a2b596a1329dca233a9537085f7cde8b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b50c3d2cbc4f90f1d1cc6221dd710dcf7ca198a15f071d98d1448f413c6c398d",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2011-10-04T05:41:31Z",
    "title_canon_sha256": "f23aae0b4d65a781c62252a7204f6ee91f4bc76a739b8218b2c616d7c0c45acf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.0582",
    "kind": "arxiv",
    "version": 1
  }
}