Pith Number

pith:YSCIYW45

pith:2013:YSCIYW45RMRHB3CWDT3LOWOHZE

not attested not anchored not stored refs pending

Random regular graphs and the systole of a random surface

Bram Petri

arxiv:1311.5140 v3 · 2013-11-20 · math.DG · math.CO · 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{YSCIYW45RMRHB3CWDT3LOWOHZE}

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	2026-05-18T00:44:29.312389Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4848c5b9d8b2270ec561cf6b759c7c92c9e4019db536c1e1cb90489dbeff4e7

Aliases

arxiv: 1311.5140 · arxiv_version: 1311.5140v3 · doi: 10.48550/arxiv.1311.5140 · pith_short_12: YSCIYW45RMRH · pith_short_16: YSCIYW45RMRHB3CW · pith_short_8: YSCIYW45

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/YSCIYW45RMRHB3CWDT3LOWOHZE \
  | 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: c4848c5b9d8b2270ec561cf6b759c7c92c9e4019db536c1e1cb90489dbeff4e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eedbc1d8653292954385eab9d968beb63f4d68cf36c680ea8845f879954efcd3",
    "cross_cats_sorted": [
      "math.CO",
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-11-20T17:04:15Z",
    "title_canon_sha256": "faa496d1effdc1e449fc5f82851aca3ab4b495a507656cc6877d4788e04dff3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.5140",
    "kind": "arxiv",
    "version": 3
  }
}