Pith Number

pith:5NMSMNDQ

pith:2009:5NMSMNDQMHUGC4ZUPDLX6LUQSC

not attested not anchored not stored refs pending

Closeness to the Diagonal for Longest Common Subsequences in Random Words

C. Houdr\'e, H. Matzinger

arxiv:0911.2031 v4 · 2009-11-10 · math.PR · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5NMSMNDQMHUGC4ZUPDLX6LUQSC}

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	2026-05-18T01:16:33.727929Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb5926347061e861733478d77f2e90909dc962e80f1a36f080039e6d6c1e7552

Aliases

arxiv: 0911.2031 · arxiv_version: 0911.2031v4 · doi: 10.48550/arxiv.0911.2031 · pith_short_12: 5NMSMNDQMHUG · pith_short_16: 5NMSMNDQMHUGC4ZU · pith_short_8: 5NMSMNDQ

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/5NMSMNDQMHUGC4ZUPDLX6LUQSC \
  | 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: eb5926347061e861733478d77f2e90909dc962e80f1a36f080039e6d6c1e7552

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a62d6ba3b5544c6a6ba928514ab725536d8a255f77ae9253e075d23230a15890",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.PR",
    "submitted_at": "2009-11-10T23:59:41Z",
    "title_canon_sha256": "e358390ee267cf472c07d77efaa4263b3f72b47ac09433d917493e292d34856a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.2031",
    "kind": "arxiv",
    "version": 4
  }
}