Pith Number

pith:OBHJPB2C

pith:2019:OBHJPB2CGGHP6AQ2XQTNYT2V3P

not attested not anchored not stored refs pending

Perfect matroids over hyperfields

Nathan Bowler, Rudi Pendavingh

arxiv:1908.03420 v3 · 2019-08-09 · 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{OBHJPB2CGGHP6AQ2XQTNYT2V3P}

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

Quiver matroids -- Matroid morphisms, quiver Grassmannians, their Euler characteristics and $\mathbb{F}_1$-points

Receipt and verification

First computed	2026-07-05T05:50:35.851371Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

704e978742318eff021abc26dc4f55dbe59515170bbb6922bd09ea01a74b3f53

Aliases

arxiv: 1908.03420 · arxiv_version: 1908.03420v3 · doi: 10.48550/arxiv.1908.03420 · pith_short_12: OBHJPB2CGGHP · pith_short_16: OBHJPB2CGGHP6AQ2 · pith_short_8: OBHJPB2C

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/OBHJPB2CGGHP6AQ2XQTNYT2V3P \
  | 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: 704e978742318eff021abc26dc4f55dbe59515170bbb6922bd09ea01a74b3f53

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "989de21092f506dd43b63e9fc9d211ad1ab1c3be46f1ac7e1ca0011eb0ae6034",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-08-09T11:43:12Z",
    "title_canon_sha256": "9614b74fcfea9cbf7c7c736478b8a89bd174e54a4b702e30c87efa7195b6e10b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.03420",
    "kind": "arxiv",
    "version": 3
  }
}