Pith Number

pith:6A5UPAFV

pith:2017:6A5UPAFVCRB732T2D5MYFHIUQU

not attested not anchored not stored refs pending

On Counting Perfect Matchings in General Graphs

Daniel \v{S}tefankovi\v{c}, Eric Vigoda, John Wilmes

arxiv:1712.07504 v1 · 2017-12-20 · cs.DS

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6A5UPAFVCRB732T2D5MYFHIUQU}

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	2026-05-18T00:27:34.361513Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f03b4780b51443fdea7a1f59829d1485285caab483b038a0116af668bf699cee

Aliases

arxiv: 1712.07504 · arxiv_version: 1712.07504v1 · doi: 10.48550/arxiv.1712.07504 · pith_short_12: 6A5UPAFVCRB7 · pith_short_16: 6A5UPAFVCRB732T2 · pith_short_8: 6A5UPAFV

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/6A5UPAFVCRB732T2D5MYFHIUQU \
  | 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: f03b4780b51443fdea7a1f59829d1485285caab483b038a0116af668bf699cee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "902a5d9d58f5f4ed7eb8cb787c926d7c434976747e0089a3da18384ca4ced9c5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-12-20T14:53:56Z",
    "title_canon_sha256": "d698c34f32c9966653899525325b1a697382d916e38707752a99f50f390701b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.07504",
    "kind": "arxiv",
    "version": 1
  }
}