Pith Number

pith:OXSVBQYJ

pith:2010:OXSVBQYJNY4HEKIGHB5O5Y4WBB

not attested not anchored not stored refs pending

Congruence conditions, parcels, and Tutte polynomials of graphs and matroids

Joseph P. S. Kung

arxiv:1007.0279 v2 · 2010-07-02 · 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{OXSVBQYJNY4HEKIGHB5O5Y4WBB}

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	2026-05-18T04:07:06.803235Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75e550c3096e38722906387aeee3960865d336568ca4f9a0cc25aa57f8677662

Aliases

arxiv: 1007.0279 · arxiv_version: 1007.0279v2 · doi: 10.48550/arxiv.1007.0279 · pith_short_12: OXSVBQYJNY4H · pith_short_16: OXSVBQYJNY4HEKIG · pith_short_8: OXSVBQYJ

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/OXSVBQYJNY4HEKIGHB5O5Y4WBB \
  | 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: 75e550c3096e38722906387aeee3960865d336568ca4f9a0cc25aa57f8677662

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba56852ce69762049452ad38bf5d5d9ef435dd7bc3dbfaa839fe88241a79c4bc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2010-07-02T00:05:34Z",
    "title_canon_sha256": "3fb95632b41d5b0c8f4ea1503a12e365ad954978d04303f13f7b066d47899385"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1007.0279",
    "kind": "arxiv",
    "version": 2
  }
}