Pith Number

pith:RTUVMHWX

pith:2018:RTUVMHWXPTJVEQCUAAUON4ZYE4

not attested not anchored not stored refs pending

Optimal cyclic $(r,\delta)$ locally repairable codes with unbounded length

Fang-Wei Fu, Weijun Fang

arxiv:1805.12345 v2 · 2018-05-31 · 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{RTUVMHWXPTJVEQCUAAUON4ZYE4}

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	2026-05-18T00:04:23.041112Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ce9561ed77cd35240540028e6f33827020ce7cb5309cf32197012f33d453e7f

Aliases

arxiv: 1805.12345 · arxiv_version: 1805.12345v2 · doi: 10.48550/arxiv.1805.12345 · pith_short_12: RTUVMHWXPTJV · pith_short_16: RTUVMHWXPTJVEQCU · pith_short_8: RTUVMHWX

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/RTUVMHWXPTJVEQCUAAUON4ZYE4 \
  | 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: 8ce9561ed77cd35240540028e6f33827020ce7cb5309cf32197012f33d453e7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b7bc666672cc1af59809ea0e11c30d28228a39da24fe3812b4b27f7a5f40724",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-05-31T07:04:12Z",
    "title_canon_sha256": "b9c168803f59da618ed440b6b7c96f8ffbcaa7075e5f1fa041a715505d6c6dbf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.12345",
    "kind": "arxiv",
    "version": 2
  }
}