Pith Number

pith:RWICOTMG

pith:2014:RWICOTMGZAL77I2JMBIEI2KCP6

not attested not anchored not stored refs pending

Anti-forcing numbers of perfect matchings of graphs

Heping Zhang, Hongchuan Lei, Yeong-Nan Yeh

arxiv:1406.3796 v1 · 2014-06-15 · 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{RWICOTMGZAL77I2JMBIEI2KCP6}

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	2026-05-18T02:49:39.707668Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d90274d86c817ffa34960504469427fb807babdac66dc2e6c459fa188da44dd

Aliases

arxiv: 1406.3796 · arxiv_version: 1406.3796v1 · doi: 10.48550/arxiv.1406.3796 · pith_short_12: RWICOTMGZAL7 · pith_short_16: RWICOTMGZAL77I2J · pith_short_8: RWICOTMG

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/RWICOTMGZAL77I2JMBIEI2KCP6 \
  | 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: 8d90274d86c817ffa34960504469427fb807babdac66dc2e6c459fa188da44dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46052ad6a22046a38552a3df8ea0e7aa58e5adf10cc7bc92560f59f18ca0f4f6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-06-15T06:39:30Z",
    "title_canon_sha256": "442ffc0f41dd96ab1ef1c6a6fe104e281d02c6e5d3c0ac10a986a1f0c6c3a13e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.3796",
    "kind": "arxiv",
    "version": 1
  }
}