Pith Number

pith:GFRYGXMR

pith:2010:GFRYGXMRNO2WLLNS4UHWVHJCHE

not attested not anchored not stored refs pending

Counting perfect matchings of cubic graphs in the geometric dual

Andrea Jim\'enez, Marcos Kiwi

arxiv:1010.5918 v1 · 2010-10-28 · 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{GFRYGXMRNO2WLLNS4UHWVHJCHE}

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	2026-05-18T04:38:14.958088Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3163835d916bb565adb2e50f6a9d223925e5dba11c63597d6e737248b08af967

Aliases

arxiv: 1010.5918 · arxiv_version: 1010.5918v1 · doi: 10.48550/arxiv.1010.5918 · pith_short_12: GFRYGXMRNO2W · pith_short_16: GFRYGXMRNO2WLLNS · pith_short_8: GFRYGXMR

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/GFRYGXMRNO2WLLNS4UHWVHJCHE \
  | 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: 3163835d916bb565adb2e50f6a9d223925e5dba11c63597d6e737248b08af967

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "912c88efcd61d64f445a751f47afe2713a573d3306198c4074ae0c149e670683",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2010-10-28T11:05:40Z",
    "title_canon_sha256": "c278594e33869c065302eb1ba7ed6d9f701e42aea077df42d9ce9fc1799d0629"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.5918",
    "kind": "arxiv",
    "version": 1
  }
}