Pith Number

pith:Z6FGURR5

pith:2018:Z6FGURR5M62CH3OUJTDEBN446D

not attested not anchored not stored refs pending

Matching preclusion number of graphs

Eddie Cheng, Jinyu Zou, Yaping Mao, Zhao Wang

arxiv:1808.10443 v1 · 2018-08-30 · 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{Z6FGURR5M62CH3OUJTDEBN446D}

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	2026-05-18T00:06:45.624579Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf8a6a463d67b423edd44cc640b79cf0e18346fcc3c675d58d80ca9e5a95a016

Aliases

arxiv: 1808.10443 · arxiv_version: 1808.10443v1 · doi: 10.48550/arxiv.1808.10443 · pith_short_12: Z6FGURR5M62C · pith_short_16: Z6FGURR5M62CH3OU · pith_short_8: Z6FGURR5

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/Z6FGURR5M62CH3OUJTDEBN446D \
  | 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: cf8a6a463d67b423edd44cc640b79cf0e18346fcc3c675d58d80ca9e5a95a016

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ec718818872e2e7788d68614cc168a6213b8ebe3a82953f3b70be1304f856cb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-08-30T15:14:12Z",
    "title_canon_sha256": "a04079fe282050eebbef75121acd2157c3b83cb16e1fb3b28805ce29bcfbcb76"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.10443",
    "kind": "arxiv",
    "version": 1
  }
}