Pith Number

pith:MSGA2WR7

pith:2015:MSGA2WR7APU5HHKZZNFSPBLY3P

not attested not anchored not stored refs pending

The second Feng-Rao number for codes coming from inductive semigroups

J. I. Farr\'an, P. A. Garc\'ia-S\'anchez

arxiv:1505.01395 v1 · 2015-04-27 · cs.IT · math.AC · math.CO · math.IT · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MSGA2WR7APU5HHKZZNFSPBLY3P}

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	2026-05-18T02:16:49.480927Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

648c0d5a3f03e9d39d59cb4b278578dbd372409ef636f76ed09c348be5963af4

Aliases

arxiv: 1505.01395 · arxiv_version: 1505.01395v1 · doi: 10.48550/arxiv.1505.01395 · pith_short_12: MSGA2WR7APU5 · pith_short_16: MSGA2WR7APU5HHKZ · pith_short_8: MSGA2WR7

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/MSGA2WR7APU5HHKZZNFSPBLY3P \
  | 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: 648c0d5a3f03e9d39d59cb4b278578dbd372409ef636f76ed09c348be5963af4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f73ae8b56bbd0c8a9b66d661b39ae280a6f19741ca21383d35025124d5a24ee",
    "cross_cats_sorted": [
      "math.AC",
      "math.CO",
      "math.IT",
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-04-27T19:56:10Z",
    "title_canon_sha256": "988e3d694d1728c607e9764d5ef1a038598ed1d794d7b850324480f491de5571"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.01395",
    "kind": "arxiv",
    "version": 1
  }
}