Pith Number

pith:ZQYPD6VA

pith:2018:ZQYPD6VAMT237B2EGKO75L225U

not attested not anchored not stored refs pending

The edge-Erd\H{o}s-P\'osa property

Felix Joos, Henning Bruhn, Matthias Heinlein

arxiv:1809.11038 v1 · 2018-09-28 · 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{ZQYPD6VAMT237B2EGKO75L225U}

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	2026-05-18T00:04:33.521148Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc30f1faa064f5bf8744329dfeaf5aed1a7d155f440623a3a430183e7cb0c1c1

Aliases

arxiv: 1809.11038 · arxiv_version: 1809.11038v1 · doi: 10.48550/arxiv.1809.11038 · pith_short_12: ZQYPD6VAMT23 · pith_short_16: ZQYPD6VAMT237B2E · pith_short_8: ZQYPD6VA

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/ZQYPD6VAMT237B2EGKO75L225U \
  | 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: cc30f1faa064f5bf8744329dfeaf5aed1a7d155f440623a3a430183e7cb0c1c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3b0338f9b32b3730df5fe423be737ec94939e8109467a8f1bab9de2e1667e11",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-09-28T14:05:44Z",
    "title_canon_sha256": "4d39d263fa667c46df89cdf2e00d1f3568170a57ecb8d85f639816df8179d513"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.11038",
    "kind": "arxiv",
    "version": 1
  }
}