Pith Number

pith:YYGVORCI

pith:2013:YYGVORCIN2QZ5L3QUMH2KAKE5P

not attested not anchored not stored refs pending

QUADRO: A supervised dimension reduction method via Rayleigh quotient optimization

Han Liu, Jianqing Fan, Lucy Xia, Zheng Tracy Ke

arxiv:1311.5542 v3 · 2013-11-21 · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YYGVORCIN2QZ5L3QUMH2KAKE5P}

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	2026-05-18T01:36:11.424361Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c60d5744486ea19eaf70a30fa50144ebcfc2df0afbf6f34dd7f8cee88ee6ab1e

Aliases

arxiv: 1311.5542 · arxiv_version: 1311.5542v3 · doi: 10.48550/arxiv.1311.5542 · pith_short_12: YYGVORCIN2QZ · pith_short_16: YYGVORCIN2QZ5L3Q · pith_short_8: YYGVORCI

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/YYGVORCIN2QZ5L3QUMH2KAKE5P \
  | 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: c60d5744486ea19eaf70a30fa50144ebcfc2df0afbf6f34dd7f8cee88ee6ab1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19b55d57db4e544e8446da1a05ca072e3ffe7560b847154feefd8440f5a02323",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2013-11-21T20:30:45Z",
    "title_canon_sha256": "fa4ffc97b8d5091e9d27242b548c5827f2f5e8af4f493f6199b7dcb41a4bb5ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.5542",
    "kind": "arxiv",
    "version": 3
  }
}