Pith Number

pith:5HE2C3NP

pith:2019:5HE2C3NPTBVWX3PGPLGRMJC2G3

not attested not anchored not stored refs pending

Arc-disjoint Strong Spanning Subdigraphs of Semicomplete Compositions

Anders Yeo, Gregory Gutin, Joergen Bang-Jensen

arxiv:1903.12225 v1 · 2019-03-28 · cs.DM · 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{5HE2C3NPTBVWX3PGPLGRMJC2G3}

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	2026-05-17T23:49:54.549993Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9c9a16daf986b6bede67acd16245a36ca6acb52e2b188a1a7ef0ab886bb3317

Aliases

arxiv: 1903.12225 · arxiv_version: 1903.12225v1 · doi: 10.48550/arxiv.1903.12225 · pith_short_12: 5HE2C3NPTBVW · pith_short_16: 5HE2C3NPTBVWX3PG · pith_short_8: 5HE2C3NP

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/5HE2C3NPTBVWX3PGPLGRMJC2G3 \
  | 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: e9c9a16daf986b6bede67acd16245a36ca6acb52e2b188a1a7ef0ab886bb3317

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b3e94f33a75c353f7df39d621406dc74e6d2c38353fc6b06221f56801f6684e",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2019-03-28T19:02:20Z",
    "title_canon_sha256": "63e61e9612d5cac5267f0bb0b578444f134602a110453ae3d7b1c4c958c09c1a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.12225",
    "kind": "arxiv",
    "version": 1
  }
}