Pith Number

pith:G5CFJN2S

pith:2016:G5CFJN2SQOZPWN3EVSH73I7WS3

not attested not anchored not stored refs pending

The intersection ring of matroids

Simon Hampe

arxiv:1602.07167 v2 · 2016-02-23 · math.CO · math.AG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{G5CFJN2SQOZPWN3EVSH73I7WS3}

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

Hepp's bound for Feynman graphs and matroids

Receipt and verification

First computed	2026-05-18T01:06:24.423561Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

374454b75283b2fb3764ac8ffda3f696e2046aa5317680336b02434db0452234

Aliases

arxiv: 1602.07167 · arxiv_version: 1602.07167v2 · doi: 10.48550/arxiv.1602.07167 · pith_short_12: G5CFJN2SQOZP · pith_short_16: G5CFJN2SQOZPWN3E · pith_short_8: G5CFJN2S

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/G5CFJN2SQOZPWN3EVSH73I7WS3 \
  | 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: 374454b75283b2fb3764ac8ffda3f696e2046aa5317680336b02434db0452234

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2c24189aa5071c6a15639aea056695b692961b553b9ee28a9d878ed3ab5a47c",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-02-23T14:30:51Z",
    "title_canon_sha256": "c768389bf257ea55db8e119f9cfe646348cc6d680cea06f6979079323d74a86e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.07167",
    "kind": "arxiv",
    "version": 2
  }
}