Pith Number

pith:I7XHPVNF

pith:2015:I7XHPVNF33BEFRZXWZWE6GG3CD

not attested not anchored not stored refs pending

Count Matroids of Group-Labeled Graphs

Rintaro Ikeshita, Shin-ichi Tanigawa

arxiv:1507.01259 v2 · 2015-07-05 · 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{I7XHPVNF33BEFRZXWZWE6GG3CD}

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	2026-05-18T01:11:43.818405Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47ee77d5a5dec242c737b66c4f18db10f3be8c11010277929e8f0eb1d9112c79

Aliases

arxiv: 1507.01259 · arxiv_version: 1507.01259v2 · doi: 10.48550/arxiv.1507.01259 · pith_short_12: I7XHPVNF33BE · pith_short_16: I7XHPVNF33BEFRZX · pith_short_8: I7XHPVNF

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/I7XHPVNF33BEFRZXWZWE6GG3CD \
  | 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: 47ee77d5a5dec242c737b66c4f18db10f3be8c11010277929e8f0eb1d9112c79

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6cb422277392efadaa4100f2a2659c5a0e674978278f33709dca3e94576e4341",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-07-05T19:12:30Z",
    "title_canon_sha256": "7d09acdea54c0bee2e3853d7dd39f68795c715a6d801abbc988c4e7eb6f67440"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.01259",
    "kind": "arxiv",
    "version": 2
  }
}