Pith Number

pith:XIG5GLDY

pith:2009:XIG5GLDYWB43MGKBNAUY2ZABWV

not attested not anchored not stored refs pending

On the rate of approximation in finite-alphabet longest increasing subsequence problems

Christian Houdr\'e, Zsolt Talata

arxiv:0911.4917 v3 · 2009-11-25 · math.PR · math.ST · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XIG5GLDYWB43MGKBNAUY2ZABWV}

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	2026-05-18T03:39:43.905590Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba0dd32c78b079b6194168298d6401b56ab47c684304d636d7dd0bc1553747e1

Aliases

arxiv: 0911.4917 · arxiv_version: 0911.4917v3 · doi: 10.48550/arxiv.0911.4917 · pith_short_12: XIG5GLDYWB43 · pith_short_16: XIG5GLDYWB43MGKB · pith_short_8: XIG5GLDY

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/XIG5GLDYWB43MGKBNAUY2ZABWV \
  | 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: ba0dd32c78b079b6194168298d6401b56ab47c684304d636d7dd0bc1553747e1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21d460c040c4a2c73ed1f28513a7aadad6f5b2c9251052d9b6d6cfc097740c34",
    "cross_cats_sorted": [
      "math.ST",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.PR",
    "submitted_at": "2009-11-25T17:03:25Z",
    "title_canon_sha256": "8b65168db2056269e14717c9cef2a4528657f621a0f1dc55557f477f792370c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.4917",
    "kind": "arxiv",
    "version": 3
  }
}