Pith Number

pith:4HCUAFHO

pith:2013:4HCUAFHO3LDUN2B6HAKG373OFE

not attested not anchored not stored refs pending

Update-Efficiency and Local Repairability Limits for Capacity Approaching Codes

Arya Mazumdar, Gregory W. Wornell, Venkat Chandar

arxiv:1305.3224 v3 · 2013-05-14 · 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{4HCUAFHO3LDUN2B6HAKG373OFE}

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	2026-05-18T03:11:13.003900Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1c54014eedac746e83e38146dff6e2923818483c048e31bb5c87f573fc99148

Aliases

arxiv: 1305.3224 · arxiv_version: 1305.3224v3 · doi: 10.48550/arxiv.1305.3224 · pith_short_12: 4HCUAFHO3LDU · pith_short_16: 4HCUAFHO3LDUN2B6 · pith_short_8: 4HCUAFHO

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/4HCUAFHO3LDUN2B6HAKG373OFE \
  | 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: e1c54014eedac746e83e38146dff6e2923818483c048e31bb5c87f573fc99148

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1562d1bdb9780a63fe67044f197c245101c70f55d1b73559d196de3f17ec1b57",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-05-14T17:57:00Z",
    "title_canon_sha256": "6cde7812f280d388d18d8942cfc35b5c8407d3dfa8b62bac0466aee415ae3c33"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.3224",
    "kind": "arxiv",
    "version": 3
  }
}