Pith Number

pith:JL5FRXGT

pith:2008:JL5FRXGTP7PZRQ5QIBVKNCR7OF

not attested not anchored not stored refs pending

Lifts of matroid representations over partial fields

R. A. Pendavingh, S. H. M. van Zwam

arxiv:0804.3263 v2 · 2008-04-21 · 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{JL5FRXGTP7PZRQ5QIBVKNCR7OF}

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	2026-05-18T04:31:42.387793Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4afa58dcd37fdf98c3b0406aa68a3f717f0ab56e713afc39aab9b5afa1afd1f9

Aliases

arxiv: 0804.3263 · arxiv_version: 0804.3263v2 · doi: 10.48550/arxiv.0804.3263 · pith_short_12: JL5FRXGTP7PZ · pith_short_16: JL5FRXGTP7PZRQ5Q · pith_short_8: JL5FRXGT

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/JL5FRXGTP7PZRQ5QIBVKNCR7OF \
  | 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: 4afa58dcd37fdf98c3b0406aa68a3f717f0ab56e713afc39aab9b5afa1afd1f9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b268053c03640dab5047e3d79a7b20f29319371586c5e0f35c34e6e867a0aa08",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2008-04-21T11:34:20Z",
    "title_canon_sha256": "063207f0d2891992b9915204d406dfe39d24ee1a8f9faebbf2afa8a9a1eb4c45"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.3263",
    "kind": "arxiv",
    "version": 2
  }
}