Pith Number

pith:W4KQFCI6

pith:2015:W4KQFCI6QPPPR36FZ4QJQ4LUMS

not attested not anchored not stored refs pending

The Kelmans-Seymour conjecture I: special separations

Dawei He, Xingxing Yu, Yan Wang

arxiv:1511.05020 v1 · 2015-11-16 · 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{W4KQFCI6QPPPR36FZ4QJQ4LUMS}

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	2026-05-18T01:26:51.005360Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b71502891e83def8efc5cf20987174649f6d222b129b4459d716aaebe0915be9

Aliases

arxiv: 1511.05020 · arxiv_version: 1511.05020v1 · doi: 10.48550/arxiv.1511.05020 · pith_short_12: W4KQFCI6QPPP · pith_short_16: W4KQFCI6QPPPR36F · pith_short_8: W4KQFCI6

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/W4KQFCI6QPPPR36FZ4QJQ4LUMS \
  | 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: b71502891e83def8efc5cf20987174649f6d222b129b4459d716aaebe0915be9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a53431776e2b6727fbaf0d6bfbac37625d7a6f7a208e43c2d8538496ed680985",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-11-16T16:24:45Z",
    "title_canon_sha256": "359c03bef767584585b50b6a5f2a20ad5c968a7e270e4eae283796aa21286be7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.05020",
    "kind": "arxiv",
    "version": 1
  }
}