Pith Number

pith:V42C7DIL

pith:2019:V42C7DILRKB3JOGXIKVK4HLCTR

not attested not anchored not stored refs pending

Representations of torsion-free arithmetic matroids

Giovanni Paolini, Roberto Pagaria

arxiv:1908.04137 v1 · 2019-08-12 · 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{V42C7DILRKB3JOGXIKVK4HLCTR}

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	2026-07-05T05:48:29.474213Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af342f8d0b8a83b4b8d742aaae1d629c57a72dc07d42dbb7dc0e414bd2cb397e

Aliases

arxiv: 1908.04137 · arxiv_version: 1908.04137v1 · doi: 10.48550/arxiv.1908.04137 · pith_short_12: V42C7DILRKB3 · pith_short_16: V42C7DILRKB3JOGX · pith_short_8: V42C7DIL

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/V42C7DILRKB3JOGXIKVK4HLCTR \
  | 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: af342f8d0b8a83b4b8d742aaae1d629c57a72dc07d42dbb7dc0e414bd2cb397e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "95bbc861032ab45f52ff84772f036f2dc04b3322486806c96f35e93b6b2f65de",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-08-12T13:18:50Z",
    "title_canon_sha256": "8edf42211bac43bedcee5f33183dfa029f64e6f17a674b5fe3c73b90de04c474"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04137",
    "kind": "arxiv",
    "version": 1
  }
}