Pith Number

pith:GNO74W2B

pith:2012:GNO74W2B2HT7LWYF4SMYU74ZQU

not attested not anchored not stored refs pending

The Cost of Perfection for Matchings in Graphs

Celina de Figueiredo, Diana Sasaki, Emilio Vital Brazil, Guilherme D. da Fonseca

arxiv:1204.2727 v5 · 2012-04-11 · 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{GNO74W2B2HT7LWYF4SMYU74ZQU}

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	2026-05-18T00:01:23.880174Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

335dfe5b41d1e7f5db05e4998a7f998518d166d0e9e99dd582828a24a7400c44

Aliases

arxiv: 1204.2727 · arxiv_version: 1204.2727v5 · doi: 10.48550/arxiv.1204.2727 · pith_short_12: GNO74W2B2HT7 · pith_short_16: GNO74W2B2HT7LWYF · pith_short_8: GNO74W2B

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/GNO74W2B2HT7LWYF4SMYU74ZQU \
  | 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: 335dfe5b41d1e7f5db05e4998a7f998518d166d0e9e99dd582828a24a7400c44

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "beba6f3fc4350db0b9c0517ff310b90bd581bbda8c4ed84e1bd3c93faa34afd9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2012-04-11T17:51:22Z",
    "title_canon_sha256": "a24447816e40a71209e637ac8dff70563683ae6beaac570f43432681bd5131c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.2727",
    "kind": "arxiv",
    "version": 5
  }
}