Pith Number

pith:IR6CDOW6

pith:2014:IR6CDOW673YTL72CATIQOVYQYU

not attested not anchored not stored refs pending

On the Existence of MDS Codes Over Small Fields With Constrained Generator Matrices

Chau Yuen, Son Hoang Dau, Wentu Song

arxiv:1401.3807 v1 · 2014-01-16 · cs.IT · cs.DM · 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{IR6CDOW673YTL72CATIQOVYQYU}

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	2026-05-18T03:02:06.918198Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

447c21badefef135ff4204d1075710c528e52f5ce443181d779c34720bc5f807

Aliases

arxiv: 1401.3807 · arxiv_version: 1401.3807v1 · doi: 10.48550/arxiv.1401.3807 · pith_short_12: IR6CDOW673YT · pith_short_16: IR6CDOW673YTL72C · pith_short_8: IR6CDOW6

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/IR6CDOW673YTL72CATIQOVYQYU \
  | 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: 447c21badefef135ff4204d1075710c528e52f5ce443181d779c34720bc5f807

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e17b3ac3d8f7f7146738b778ee190809f9b4af1951d9d762d168d7544dd561ef",
    "cross_cats_sorted": [
      "cs.DM",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2014-01-16T01:24:33Z",
    "title_canon_sha256": "da669d6884ab02b12a38be9c95dd830ebe6c28c68248939041dd1153f95792ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.3807",
    "kind": "arxiv",
    "version": 1
  }
}