Pith Number

pith:RPIWTQ4C

pith:2018:RPIWTQ4CDWL3QAHRR6R4IELSQJ

not attested not anchored not stored refs pending

Vertex-minors and the Erd\H{o}s-Hajnal conjecture

Maria Chudnovsky, Sang-il Oum

arxiv:1804.11008 v2 · 2018-04-30 · 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{RPIWTQ4CDWL3QAHRR6R4IELSQJ}

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	2026-05-18T00:04:07.736847Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8bd169c3821d97b800f18fa3c4117282431049ee42f382b2879a060384a872c2

Aliases

arxiv: 1804.11008 · arxiv_version: 1804.11008v2 · doi: 10.48550/arxiv.1804.11008 · pith_short_12: RPIWTQ4CDWL3 · pith_short_16: RPIWTQ4CDWL3QAHR · pith_short_8: RPIWTQ4C

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/RPIWTQ4CDWL3QAHRR6R4IELSQJ \
  | 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: 8bd169c3821d97b800f18fa3c4117282431049ee42f382b2879a060384a872c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5d06d5fb78cc12c20ea7e816cb029202d92b53748b5a0ec4fb50578c1202efe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-04-30T00:35:06Z",
    "title_canon_sha256": "838b337c3bea5ecb759522a21950f6fb1d5e04df68f2f535a1010101a277777d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.11008",
    "kind": "arxiv",
    "version": 2
  }
}