Pith Number

pith:7QJUXE5N

pith:2013:7QJUXE5N35QTYLJORR3HIL2FBG

not attested not anchored not stored refs pending

On interval edge-colorings of outerplanar graphs

Petros A. Petrosyan

arxiv:1303.1039 v1 · 2013-03-05 · 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{7QJUXE5N35QTYLJORR3HIL2FBG}

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	2026-05-18T03:31:45.712975Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc134b93addf613c2d2e8c76742f4509a545e26ad02d337b39b8bc56100361b9

Aliases

arxiv: 1303.1039 · arxiv_version: 1303.1039v1 · doi: 10.48550/arxiv.1303.1039 · pith_short_12: 7QJUXE5N35QT · pith_short_16: 7QJUXE5N35QTYLJO · pith_short_8: 7QJUXE5N

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/7QJUXE5N35QTYLJORR3HIL2FBG \
  | 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: fc134b93addf613c2d2e8c76742f4509a545e26ad02d337b39b8bc56100361b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9635c884614a66e408796e5c2c32b42f576a39cd9b33dc8c6bdbc064e724caa5",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-03-05T14:08:05Z",
    "title_canon_sha256": "3aca98d16c0aaea03fe9d7f4d481c1c4740ae0b287f042985d7f8eb7476ded6a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.1039",
    "kind": "arxiv",
    "version": 1
  }
}