Pith Number

pith:YAORXAWZ

pith:2015:YAORXAWZHELGY5UFQJIKBBFVWI

not attested not anchored not stored refs pending

On $\omega \psi$-Perfect Graphs

C. Rubio-Montiel, G. Araujo-Pardo

arxiv:1507.06919 v2 · 2015-07-24 · 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{YAORXAWZHELGY5UFQJIKBBFVWI}

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	2026-05-18T00:01:44.133633Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c01d1b82d939166c76858250a084b5b23cee97901b4a4fd67ca2a1a2c7b473a5

Aliases

arxiv: 1507.06919 · arxiv_version: 1507.06919v2 · doi: 10.48550/arxiv.1507.06919 · pith_short_12: YAORXAWZHELG · pith_short_16: YAORXAWZHELGY5UF · pith_short_8: YAORXAWZ

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/YAORXAWZHELGY5UFQJIKBBFVWI \
  | 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: c01d1b82d939166c76858250a084b5b23cee97901b4a4fd67ca2a1a2c7b473a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eccdbde2ddbee62b8c6c534bc17725212de39042f7dde2394d278a41420549d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-07-24T16:54:17Z",
    "title_canon_sha256": "29075002d08b7536125ef8c3a973c3da3500d122bba2a008aca9fc819a2229ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.06919",
    "kind": "arxiv",
    "version": 2
  }
}