Pith Number

pith:FVDRF36K

pith:2008:FVDRF36KG3EYHPHP2LSY25DU4F

not attested not anchored not stored refs pending

Positroids and Schubert matroids

Suho Oh

arxiv:0803.1018 v5 · 2008-03-07 · 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{FVDRF36KG3EYHPHP2LSY25DU4F}

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	2026-05-18T04:39:39.534327Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d4712efca36c983bcefd2e58d7474e17ce01f5e7004b276b10560a55b780d6f

Aliases

arxiv: 0803.1018 · arxiv_version: 0803.1018v5 · doi: 10.48550/arxiv.0803.1018 · pith_short_12: FVDRF36KG3EY · pith_short_16: FVDRF36KG3EYHPHP · pith_short_8: FVDRF36K

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/FVDRF36KG3EYHPHP2LSY25DU4F \
  | 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: 2d4712efca36c983bcefd2e58d7474e17ce01f5e7004b276b10560a55b780d6f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0510341f45ecd9fe5a7ca59545f5fae95a2fa319d8d8fecc9b0ef3dbbb5e802b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2008-03-07T03:14:30Z",
    "title_canon_sha256": "85ef6f93e0440b3ba1c8e36c37ac4e17af0bbd66611e0500dbc180d61eed077e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0803.1018",
    "kind": "arxiv",
    "version": 5
  }
}