Pith Number

pith:CVMAHSKO

pith:2017:CVMAHSKO2J5NWVOIG3FZV6QKWX

not attested not anchored not stored refs pending

On Perfect Matchings in Matching Covered Graphs

Dong Ye, Erling Wei, Jinghua He, Shaohui Zhai

arxiv:1703.05412 v2 · 2017-03-15 · math.CO · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CVMAHSKO2J5NWVOIG3FZV6QKWX}

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	2026-05-18T00:48:32.194874Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

155803c94ed27adb55c836cb9afa0ab5ea8abbd9a8329e4454097982e91a4aa3

Aliases

arxiv: 1703.05412 · arxiv_version: 1703.05412v2 · doi: 10.48550/arxiv.1703.05412 · pith_short_12: CVMAHSKO2J5N · pith_short_16: CVMAHSKO2J5NWVOI · pith_short_8: CVMAHSKO

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/CVMAHSKO2J5NWVOIG3FZV6QKWX \
  | 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: 155803c94ed27adb55c836cb9afa0ab5ea8abbd9a8329e4454097982e91a4aa3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "416f9b2dfa66e2490782bfa969a98b7e67cf184ee50875731c7849c71cc9ec54",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-03-15T22:48:46Z",
    "title_canon_sha256": "347c29e96836597c9a7e35842a997550a5200b7fc0bd7d87e99d1f0dbabd36f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.05412",
    "kind": "arxiv",
    "version": 2
  }
}