Pith Number

pith:JPRUFTHA

pith:2025:JPRUFTHANK3ACGUZQBEFAMYWCX

not attested not anchored not stored refs pending

The number of maximal matchings in polygon rings

Chengqi Li, Jinhui Yin, Lingjuan Shi

arxiv:2506.08687 v1 · 2025-06-10 · 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{JPRUFTHANK3ACGUZQBEFAMYWCX}

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	2026-07-05T11:19:11.895445Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4be342cce06ab6011a99804850331615e546799a6a2c79f0ad2d9308d8afb8f8

Aliases

arxiv: 2506.08687 · arxiv_version: 2506.08687v1 · doi: 10.48550/arxiv.2506.08687 · pith_short_12: JPRUFTHANK3A · pith_short_16: JPRUFTHANK3ACGUZ · pith_short_8: JPRUFTHA

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/JPRUFTHANK3ACGUZQBEFAMYWCX \
  | 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: 4be342cce06ab6011a99804850331615e546799a6a2c79f0ad2d9308d8afb8f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "abd82d8fa0f1528edc57d60f35aa7fc45ca07fcea574c9359f5e67d9130104a0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2025-06-10T10:53:14Z",
    "title_canon_sha256": "fd2054b586265af98689dc24496fb6f8ce2b83b6a696baf5fc2cf9ebb390771e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.08687",
    "kind": "arxiv",
    "version": 1
  }
}