Pith Number

pith:KNQRVBP6

pith:2013:KNQRVBP6C5HPB5DD2EUVR3WJMM

not attested not anchored not stored refs pending

Hadwiger's conjecture for 3-arc graphs

David R. Wood, Guangjun Xu, Sanming Zhou

arxiv:1310.4337 v2 · 2013-10-16 · 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{KNQRVBP6C5HPB5DD2EUVR3WJMM}

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	2026-05-18T00:40:16.643898Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53611a85fe174ef0f463d12958eec963395f21abbb42ed30749467980c040c16

Aliases

arxiv: 1310.4337 · arxiv_version: 1310.4337v2 · doi: 10.48550/arxiv.1310.4337 · pith_short_12: KNQRVBP6C5HP · pith_short_16: KNQRVBP6C5HPB5DD · pith_short_8: KNQRVBP6

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/KNQRVBP6C5HPB5DD2EUVR3WJMM \
  | 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: 53611a85fe174ef0f463d12958eec963395f21abbb42ed30749467980c040c16

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c07d50f1b81aaa59867cd6b5796c80b94dbd51480f187656b400521d30e6f82a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-10-16T11:48:39Z",
    "title_canon_sha256": "90267ea1aebe8c0bf187bcb142bdf3668bf284b528637a529bb931e8903e7a82"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.4337",
    "kind": "arxiv",
    "version": 2
  }
}