Pith Number

pith:YHBINTWY

pith:2018:YHBINTWYLN5N2MZRLYC5VHDFYK

not attested not anchored not stored refs pending

The Covering Radius of the Reed--Muller Code $RM(2,7)$ is 40

Qichun Wang

arxiv:1809.04864 v1 · 2018-09-13 · cs.IT · 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{YHBINTWYLN5N2MZRLYC5VHDFYK}

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	2026-05-18T00:05:47.271863Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1c286ced85b7add33315e05da9c65c2942897202fd92be86f6014b1d5c62469

Aliases

arxiv: 1809.04864 · arxiv_version: 1809.04864v1 · doi: 10.48550/arxiv.1809.04864 · pith_short_12: YHBINTWYLN5N · pith_short_16: YHBINTWYLN5N2MZR · pith_short_8: YHBINTWY

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/YHBINTWYLN5N2MZRLYC5VHDFYK \
  | 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: c1c286ced85b7add33315e05da9c65c2942897202fd92be86f6014b1d5c62469

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc825d28f9ecbdb2ff68c3c6c4994e0665544cf40121aeef6f648c1c54b9b215",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-09-13T10:03:27Z",
    "title_canon_sha256": "934e0818aad4230ce8791468323781456c8b5de3016761813798bad9488d9cf8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.04864",
    "kind": "arxiv",
    "version": 1
  }
}