Pith Number

pith:WV5U6OJQ

pith:2018:WV5U6OJQ35353MATI7IOWPXILB

not attested not anchored not stored refs pending

On the Variance of the Length of the Longest Common Subsequences in Random Words With an Omitted Letter

Christian Houdr\'e, Qingqing liu

arxiv:1812.09552 v1 · 2018-12-22 · math.PR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WV5U6OJQ35353MATI7IOWPXILB}

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	2026-05-17T23:57:27.551779Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b57b4f3930df77ddb01347d0eb3ee85857d4f5969f66c00f9ef466de1696ef1f

Aliases

arxiv: 1812.09552 · arxiv_version: 1812.09552v1 · doi: 10.48550/arxiv.1812.09552 · pith_short_12: WV5U6OJQ3535 · pith_short_16: WV5U6OJQ35353MAT · pith_short_8: WV5U6OJQ

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/WV5U6OJQ35353MATI7IOWPXILB \
  | 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: b57b4f3930df77ddb01347d0eb3ee85857d4f5969f66c00f9ef466de1696ef1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a832094b66a82cba15c40b38cdd7a8b883ef445f3ec098450e5a506082de9e7c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.PR",
    "submitted_at": "2018-12-22T16:15:23Z",
    "title_canon_sha256": "cc161061e873b6b84dfbe605f694fe0b3f5c87e77e79d779738e53accfa45634"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.09552",
    "kind": "arxiv",
    "version": 1
  }
}