Pith Number

pith:4FPX77T4

pith:2017:4FPX77T43IXWEPCOZQMRM7BOKG

not attested not anchored not stored refs pending

On Binary Matroid Minors and Applications to Data Storage over Small Fields

Camilla Hollanti, Matthias Grezet, Ragnar Freij-Hollanti, Thomas Westerb\"ack

arxiv:1707.00421 v2 · 2017-07-03 · cs.IT · math.CO · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4FPX77T43IXWEPCOZQMRM7BOKG}

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	2026-05-18T00:23:08.738257Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e15f7ffe7cda2f623c4ecc19167c2e5191b165b1b87a13603a9f96acdedd2d8d

Aliases

arxiv: 1707.00421 · arxiv_version: 1707.00421v2 · doi: 10.48550/arxiv.1707.00421 · pith_short_12: 4FPX77T43IXW · pith_short_16: 4FPX77T43IXWEPCO · pith_short_8: 4FPX77T4

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/4FPX77T43IXWEPCOZQMRM7BOKG \
  | 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: e15f7ffe7cda2f623c4ecc19167c2e5191b165b1b87a13603a9f96acdedd2d8d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f6894b4712939fc3ba8ca9096e50a495bd1a3c30f58fd759bff4625d85702d0",
    "cross_cats_sorted": [
      "math.CO",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-07-03T06:47:36Z",
    "title_canon_sha256": "64577dd725173889755b43cf1546970c35bd407ed8a81283d493934d8a7e671b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.00421",
    "kind": "arxiv",
    "version": 2
  }
}