Pith Number

pith:7WN34GGI

pith:2011:7WN34GGIQIF3PJ5DTZL5MY6QLL

not attested not anchored not stored refs pending

OEM for least squares problems

Bin Dai, Peter Z. G. Qian, Shifeng Xiong

arxiv:1108.0185 v2 · 2011-07-31 · 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{7WN34GGIQIF3PJ5DTZL5MY6QLL}

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	2026-05-18T03:15:56.114295Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd9bbe18c8820bb7a7a39e57d663d05ac4878d1fdb7c97f1930f702c8fa3f371

Aliases

arxiv: 1108.0185 · arxiv_version: 1108.0185v2 · doi: 10.48550/arxiv.1108.0185 · pith_short_12: 7WN34GGIQIF3 · pith_short_16: 7WN34GGIQIF3PJ5D · pith_short_8: 7WN34GGI

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/7WN34GGIQIF3PJ5DTZL5MY6QLL \
  | 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: fd9bbe18c8820bb7a7a39e57d663d05ac4878d1fdb7c97f1930f702c8fa3f371

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee8a7f1bb6fa1ef7ee440d05ea4108bad741597aa9ba7feddc36d91c0b31b6cf",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "stat.CO",
    "submitted_at": "2011-07-31T15:50:02Z",
    "title_canon_sha256": "f2e49e53f10692ee7d9515a099ccec8a29318be70ec0e14d946f463dab82dc3a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.0185",
    "kind": "arxiv",
    "version": 2
  }
}