Pith Number

pith:7UHK22MC

pith:2013:7UHK22MC7P4P5YG73RGYQMT6ET

not attested not anchored not stored refs pending

Puzzling the 120-cell

Henry Segerman, Saul Schleimer

arxiv:1310.3549 v2 · 2013-10-14 · math.GT · math.HO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7UHK22MC7P4P5YG73RGYQMT6ET}

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	2026-05-18T01:26:25.698986Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd0ead6982fbf8fee0dfdc4d88327e24c47be7761292cebdd06ee7509f1d6053

Aliases

arxiv: 1310.3549 · arxiv_version: 1310.3549v2 · doi: 10.48550/arxiv.1310.3549 · pith_short_12: 7UHK22MC7P4P · pith_short_16: 7UHK22MC7P4P5YG7 · pith_short_8: 7UHK22MC

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/7UHK22MC7P4P5YG73RGYQMT6ET \
  | 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: fd0ead6982fbf8fee0dfdc4d88327e24c47be7761292cebdd06ee7509f1d6053

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a545bbf0d4c38f6dce542887cd3daa8fae55955b6be720be17f6ad38b5ee8a34",
    "cross_cats_sorted": [
      "math.HO"
    ],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2013-10-14T02:56:46Z",
    "title_canon_sha256": "41d783c5045a14f9972060430ffc9cd65c9531c5b1751654fc494bee80e5d0f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.3549",
    "kind": "arxiv",
    "version": 2
  }
}