Pith Number

pith:KBCY323N

pith:2018:KBCY323NUNHX2PASIEM73EXHP4

not attested not anchored not stored refs pending

Maintaining Perfect Matchings at Low Cost

Jannik Matuschke, Jos\'e Verschae, Ulrike Schmidt-Kraepelin

arxiv:1811.10580 v2 · 2018-11-26 · 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{KBCY323NUNHX2PASIEM73EXHP4}

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	2026-05-17T23:47:39.662571Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50458deb6da34f7d3c124119fd92e77f3f79f409c21ef06a414482025be60e8d

Aliases

arxiv: 1811.10580 · arxiv_version: 1811.10580v2 · doi: 10.48550/arxiv.1811.10580 · pith_short_12: KBCY323NUNHX · pith_short_16: KBCY323NUNHX2PAS · pith_short_8: KBCY323N

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/KBCY323NUNHX2PASIEM73EXHP4 \
  | 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: 50458deb6da34f7d3c124119fd92e77f3f79f409c21ef06a414482025be60e8d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd7481db1d0a77ac95a7c1ebe954d8742fc986ca7b50942953bf018667eed114",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2018-11-26T18:36:11Z",
    "title_canon_sha256": "552a121b355db22649f5f7e174de3f221bb86f5ed944ab09eb6a88787e4590f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.10580",
    "kind": "arxiv",
    "version": 2
  }
}