Pith Number

pith:2MJFOX5G

pith:2009:2MJFOX5GC4O6HIBF77PBI4UONS

not attested not anchored not stored refs pending

The Weights in MDS Codes

Markus Grassl, Martianus Frederic Ezerman, Patrick Sole

arxiv:0908.1669 v2 · 2009-08-12 · 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{2MJFOX5GC4O6HIBF77PBI4UONS}

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	2026-05-18T04:25:28.692230Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d312575fa6171de3a025ffde14728e6c9d7c9c870f701cf7b6e6f7941784610d

Aliases

arxiv: 0908.1669 · arxiv_version: 0908.1669v2 · doi: 10.48550/arxiv.0908.1669 · pith_short_12: 2MJFOX5GC4O6 · pith_short_16: 2MJFOX5GC4O6HIBF · pith_short_8: 2MJFOX5G

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/2MJFOX5GC4O6HIBF77PBI4UONS \
  | 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: d312575fa6171de3a025ffde14728e6c9d7c9c870f701cf7b6e6f7941784610d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a77b52645b9a57c3331c1af623ca100ff79548c69689f81ce5b4716ad779f08b",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-08-12T10:38:56Z",
    "title_canon_sha256": "8e3f427186409659866e0c07dc15c1291f654d6cfc015270f6ef33f5315660a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.1669",
    "kind": "arxiv",
    "version": 2
  }
}