Pith Number

pith:BEABIHOU

pith:2002:BEABIHOUPZETK4Z3K7X2AFPHL3

not attested not anchored not stored refs pending

Convex Matroid Optimization

Shmuel Onn

arxiv:math/0207136 v1 · 2002-07-16 · math.CO · cs.DM · math.OC · math.RA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BEABIHOUPZETK4Z3K7X2AFPHL3}

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	2026-05-18T00:07:44.301616Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0900141dd47e4935733b57efa015e75ed4ec73e0faf4912d1eb6aff201042ee9

Aliases

arxiv: math/0207136 · arxiv_version: math/0207136v1 · doi: 10.48550/arxiv.math/0207136 · pith_short_12: BEABIHOUPZET · pith_short_16: BEABIHOUPZETK4Z3 · pith_short_8: BEABIHOU

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/BEABIHOUPZETK4Z3K7X2AFPHL3 \
  | 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: 0900141dd47e4935733b57efa015e75ed4ec73e0faf4912d1eb6aff201042ee9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07343c23ad78f8b6898638d7acd27315ed66333cd2f1d8b472bee101d4a3362d",
    "cross_cats_sorted": [
      "cs.DM",
      "math.OC",
      "math.RA"
    ],
    "license": "",
    "primary_cat": "math.CO",
    "submitted_at": "2002-07-16T21:19:22Z",
    "title_canon_sha256": "bc134fc4a5d67f1646c8e73f55da9b46d41d578d6de79a6d0bfb55b442fb72eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0207136",
    "kind": "arxiv",
    "version": 1
  }
}