Pith Number

pith:NTET3QN4

pith:2009:NTET3QN4RTQY2FIRCZACKQ3CFB

not attested not anchored not stored refs pending

Statistical estimation requires unbounded memory

Leonid (Aryeh) Kontorovich

arxiv:0907.1997 v2 · 2009-07-12 · stat.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{NTET3QN4RTQY2FIRCZACKQ3CFB}

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	2026-05-18T04:10:10.792921Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cc93dc1bc8ce18d15111640254362285248e5de2f99c9b81e7cf7e286cc5079

Aliases

arxiv: 0907.1997 · arxiv_version: 0907.1997v2 · doi: 10.48550/arxiv.0907.1997 · pith_short_12: NTET3QN4RTQY · pith_short_16: NTET3QN4RTQY2FIR · pith_short_8: NTET3QN4

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/NTET3QN4RTQY2FIRCZACKQ3CFB \
  | 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: 6cc93dc1bc8ce18d15111640254362285248e5de2f99c9b81e7cf7e286cc5079

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3fc7a3d048c004219740936371884043a091464026e7eb5f68fe8379d6554a6d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.CO",
    "submitted_at": "2009-07-12T13:20:32Z",
    "title_canon_sha256": "7947f95552e9e8e66917be63c98735426cb619680480007e4f40771bfbdad171"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.1997",
    "kind": "arxiv",
    "version": 2
  }
}