Pith Number

pith:DBUDYCYW

pith:2015:DBUDYCYWSNSJPINBICR6H636IC

not attested not anchored not stored refs pending

A Grassmann algebra for matroids

Jeffrey Giansiracusa, Noah Giansiracusa

arxiv:1510.04584 v2 · 2015-10-15 · math.AG · 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{DBUDYCYWSNSJPINBICR6H636IC}

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	2026-05-18T00:35:14.143587Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18683c0b16936497a1a140a3e3fb7e40b3b411ab746c34d47701fb0a9b4d5951

Aliases

arxiv: 1510.04584 · arxiv_version: 1510.04584v2 · doi: 10.48550/arxiv.1510.04584 · pith_short_12: DBUDYCYWSNSJ · pith_short_16: DBUDYCYWSNSJPINB · pith_short_8: DBUDYCYW

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/DBUDYCYWSNSJPINBICR6H636IC \
  | 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: 18683c0b16936497a1a140a3e3fb7e40b3b411ab746c34d47701fb0a9b4d5951

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b919881a5cc866d872adcb20788be70f2a2ad282783aeaaa82439acc0af2a259",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-10-15T15:31:32Z",
    "title_canon_sha256": "5f33ce3c092cb28a8f59f16e64c7cacccb2a795b017b51b61ef609dfced10ca1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.04584",
    "kind": "arxiv",
    "version": 2
  }
}