Pith Number

pith:L4T4DIEY

pith:2017:L4T4DIEYQXZKNI6GDXKTGSA5SA

not attested not anchored not stored refs pending

On the regularity of orientable matroids

Libby Taylor

arxiv:1712.01921 v4 · 2017-12-05 · 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{L4T4DIEYQXZKNI6GDXKTGSA5SA}

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	2026-05-17T23:41:37.290519Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f27c1a09885f2a6a3c61dd533481d9028cb6d0fca6d3a4964da740a21086b83

Aliases

arxiv: 1712.01921 · arxiv_version: 1712.01921v4 · doi: 10.48550/arxiv.1712.01921 · pith_short_12: L4T4DIEYQXZK · pith_short_16: L4T4DIEYQXZKNI6G · pith_short_8: L4T4DIEY

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/L4T4DIEYQXZKNI6GDXKTGSA5SA \
  | 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: 5f27c1a09885f2a6a3c61dd533481d9028cb6d0fca6d3a4964da740a21086b83

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d776c44e68a35651b7705f820605c434273b165246bbff56f5a321a8972e7182",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-12-05T20:56:39Z",
    "title_canon_sha256": "4d2b2e9c3fb57d997469dd029dc258f37841029cb48a18bc20cad46dabfbc7f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.01921",
    "kind": "arxiv",
    "version": 4
  }
}