Pith Number

pith:C65DWT7Y

pith:2013:C65DWT7YZ255RO7WELZ5L5E55U

not attested not anchored not stored refs pending

An improvement of the Feng-Rao bound for primary codes

Olav Geil, Stefano Martin

arxiv:1307.3107 v2 · 2013-07-11 · cs.IT · math.AC · 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{C65DWT7YZ255RO7WELZ5L5E55U}

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	2026-05-18T03:17:44.035157Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17ba3b4ff8cebbd8bbf622f3d5f49ded2fb49a5516e314362ffa5a580076ae5c

Aliases

arxiv: 1307.3107 · arxiv_version: 1307.3107v2 · doi: 10.48550/arxiv.1307.3107 · pith_short_12: C65DWT7YZ255 · pith_short_16: C65DWT7YZ255RO7W · pith_short_8: C65DWT7Y

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/C65DWT7YZ255RO7WELZ5L5E55U \
  | 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: 17ba3b4ff8cebbd8bbf622f3d5f49ded2fb49a5516e314362ffa5a580076ae5c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d68b62a9b13ec76a2fe666cf6114bc63215b0dc1de4b7ca2c5d8ec19b4726f34",
    "cross_cats_sorted": [
      "math.AC",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-07-11T13:40:19Z",
    "title_canon_sha256": "dfb9cc0ac9443f421988f99897347b762839bf115e9f409c3231be437b648f4a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.3107",
    "kind": "arxiv",
    "version": 2
  }
}