Pith Number

pith:WZX243KQ

pith:2012:WZX243KQC2LWXEVNMFGCTBLLBH

not attested not anchored not stored refs pending

Fast and Adaptive Sparse Precision Matrix Estimation in High Dimensions

Weidong Liu, Xi Luo

arxiv:1203.3896 v2 · 2012-03-17 · stat.ME · math.ST · stat.AP · stat.CO · stat.ML · stat.TH

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

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	2026-05-18T00:54:14.187116Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b66fae6d5016976b92ad614c29856b09e68cab822587968e118bce9137109764

Aliases

arxiv: 1203.3896 · arxiv_version: 1203.3896v2 · doi: 10.48550/arxiv.1203.3896 · pith_short_12: WZX243KQC2LW · pith_short_16: WZX243KQC2LWXEVN · pith_short_8: WZX243KQ

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/WZX243KQC2LWXEVNMFGCTBLLBH \
  | 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: b66fae6d5016976b92ad614c29856b09e68cab822587968e118bce9137109764

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "27b4945d7309db5056594f25de35065cda0153d6515242d56c8f3b5716b8cfdc",
    "cross_cats_sorted": [
      "math.ST",
      "stat.AP",
      "stat.CO",
      "stat.ML",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2012-03-17T21:58:02Z",
    "title_canon_sha256": "11f16bced40684f20c8e5309033e8cb3a2c28ccdeb0a9aa9fcabbfc9f81a12e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.3896",
    "kind": "arxiv",
    "version": 2
  }
}