Pith Number

pith:YSIBB7JS

pith:2013:YSIBB7JSPIOIROH67QALLHJND7

not attested not anchored not stored refs pending

Forbidden Directed Minors and Kelly-width

Qiuyi Zhang, Shiva Kintali

arxiv:1308.5170 v2 · 2013-08-23 · math.CO · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YSIBB7JSPIOIROH67QALLHJND7}

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	2026-05-18T03:02:34.694767Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c49010fd327a1c88b8fefc00b59d2d1fd5889958f395274f9c0ecf6e52844f23

Aliases

arxiv: 1308.5170 · arxiv_version: 1308.5170v2 · doi: 10.48550/arxiv.1308.5170 · pith_short_12: YSIBB7JSPIOI · pith_short_16: YSIBB7JSPIOIROH6 · pith_short_8: YSIBB7JS

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/YSIBB7JSPIOIROH67QALLHJND7 \
  | 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: c49010fd327a1c88b8fefc00b59d2d1fd5889958f395274f9c0ecf6e52844f23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c18173e96d18feabc2e380ff2bc33a165a6c214062f57ffd0f799ad16a62c3d9",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-08-23T16:19:58Z",
    "title_canon_sha256": "e902dc5996de22c779b2822027c92c796971c763440b151cc7cf933320fd02e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.5170",
    "kind": "arxiv",
    "version": 2
  }
}