Pith Number

pith:THQU7BZA

pith:2014:THQU7BZAWADZUGMENQNBWWM3MC

not attested not anchored not stored refs pending

No finite $5$-regular matchstick graph exists

Sascha Kurz

arxiv:1401.1793 v1 · 2014-01-08 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{THQU7BZAWADZUGMENQNBWWM3MC}

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	2026-05-18T03:02:57.794331Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

99e14f8720b0079a19846c1a1b599b60b01c95ac61acb45259353ce7a9ca6b68

Aliases

arxiv: 1401.1793 · arxiv_version: 1401.1793v1 · doi: 10.48550/arxiv.1401.1793 · pith_short_12: THQU7BZAWADZ · pith_short_16: THQU7BZAWADZUGME · pith_short_8: THQU7BZA

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/THQU7BZAWADZUGMENQNBWWM3MC \
  | 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: 99e14f8720b0079a19846c1a1b599b60b01c95ac61acb45259353ce7a9ca6b68

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6f918680c8070b99b9643d7cca0cd84c76e8040c2bdb9946068aec5fdeb3b6e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-01-08T19:59:25Z",
    "title_canon_sha256": "09e8e20aa3494aad77525d27efea886f258dea87e76f5d96675d1f588d8a0565"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.1793",
    "kind": "arxiv",
    "version": 1
  }
}