Pith Number

pith:JNIAENKF

pith:2018:JNIAENKFAESZIS3QBH5SKCR27L

not attested not anchored not stored refs pending

The structure of binary matroids with no induced claw or Fano plane restriction

Frantisek Kardos, Luke Postle, Marthe Bonamy, Peter Nelson, Tom Kelly

arxiv:1806.04188 v4 · 2018-06-11 · 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{JNIAENKFAESZIS3QBH5SKCR27L}

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.

Cited by

1 paper in Pith

The smallest matroids with no large independent flat

Receipt and verification

First computed	2026-07-05T00:18:49.300021Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b500235450125944b7009fb250a3afad9406e33776eb02783bf822e3792d8bb

Aliases

arxiv: 1806.04188 · arxiv_version: 1806.04188v4 · doi: 10.48550/arxiv.1806.04188 · pith_short_12: JNIAENKFAESZ · pith_short_16: JNIAENKFAESZIS3Q · pith_short_8: JNIAENKF

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/JNIAENKFAESZIS3QBH5SKCR27L \
  | 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: 4b500235450125944b7009fb250a3afad9406e33776eb02783bf822e3792d8bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c16f653ffaf8c48596f470a0e51461d03175fa5a75c94c474e123f32f8fe8d8e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-06-11T18:57:20Z",
    "title_canon_sha256": "4b12e950709debd8bcb6fb40728f781cae566de5905a5ecd986e8339c3ed0ce3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.04188",
    "kind": "arxiv",
    "version": 4
  }
}