Pith Number

pith:X5URLFTD

pith:2012:X5URLFTDYR6UOHIZ7S7J2P5QSW

not attested not anchored not stored refs pending

On the number of matroids

J.G. van der Pol, N. Bansal, R.A. Pendavingh

arxiv:1206.6270 v5 · 2012-06-27 · 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{X5URLFTDYR6UOHIZ7S7J2P5QSW}

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	2026-05-18T03:12:33.353975Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf69159663c47d471d19fcbe9d3fb095883563118082bfadbd4eec5d6f9e6d81

Aliases

arxiv: 1206.6270 · arxiv_version: 1206.6270v5 · doi: 10.48550/arxiv.1206.6270 · pith_short_12: X5URLFTDYR6U · pith_short_16: X5URLFTDYR6UOHIZ · pith_short_8: X5URLFTD

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/X5URLFTDYR6UOHIZ7S7J2P5QSW \
  | 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: bf69159663c47d471d19fcbe9d3fb095883563118082bfadbd4eec5d6f9e6d81

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "937290c11c4c2fd9f4f70c390fa564553c597c21ab8ddd4fe0576248bbb8cc30",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-06-27T14:09:16Z",
    "title_canon_sha256": "570d698f9fc80e645d8d013131a3f584c284d9aaa5c2e57e9c702d124ea0b729"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.6270",
    "kind": "arxiv",
    "version": 5
  }
}