Pith Number

pith:EPY2TS3W

pith:2018:EPY2TS3WB4JZMAZ4FVUGY7GMTX

not attested not anchored not stored refs pending

Geometry and the Imagination in Minneapolis

Jane Gilman, John H. Conway, Peter G. Doyle, William P. Thurston

arxiv:1804.03055 v1 · 2018-04-09 · math.DG · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EPY2TS3WB4JZMAZ4FVUGY7GMTX}

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	2026-05-18T00:18:57.493918Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23f1a9cb760f1396033c2d686c7ccc9ddb5243bd8bf74742347f928aa17d8454

Aliases

arxiv: 1804.03055 · arxiv_version: 1804.03055v1 · doi: 10.48550/arxiv.1804.03055 · pith_short_12: EPY2TS3WB4JZ · pith_short_16: EPY2TS3WB4JZMAZ4 · pith_short_8: EPY2TS3W

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/EPY2TS3WB4JZMAZ4FVUGY7GMTX \
  | 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: 23f1a9cb760f1396033c2d686c7ccc9ddb5243bd8bf74742347f928aa17d8454

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3f25e28e6debe4d8a05b8fdec6c8015b909c80398e01c02a2cd48262b739122",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-04-09T15:22:58Z",
    "title_canon_sha256": "434597673026a1b132e164af7b2af4afac48c48a3956528916835b68e429e58d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.03055",
    "kind": "arxiv",
    "version": 1
  }
}