Pith Number

pith:A4D3NB4C

pith:2013:A4D3NB4C7EMRFFOXKOFHKB6CFR

not attested not anchored not stored refs pending

Domain-invariant Face Recognition using Learned Low-rank Transformation

Ching-Hui Chen, Guillermo Sapiro, Qiang Qiu

arxiv:1308.0275 v1 · 2013-08-01 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A4D3NB4C7EMRFFOXKOFHKB6CFR}

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	2026-05-18T03:16:59.378758Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0707b68782f9191295d7538a7507c22c78abffc427d5cd2f3f4282c476ec0782

Aliases

arxiv: 1308.0275 · arxiv_version: 1308.0275v1 · doi: 10.48550/arxiv.1308.0275 · pith_short_12: A4D3NB4C7EMR · pith_short_16: A4D3NB4C7EMRFFOX · pith_short_8: A4D3NB4C

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/A4D3NB4C7EMRFFOXKOFHKB6CFR \
  | 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: 0707b68782f9191295d7538a7507c22c78abffc427d5cd2f3f4282c476ec0782

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c97ce54b7142ca95c05b3b0c562e51b0369e3bebeea9a6b90f1b4fbc1fbaea1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2013-08-01T17:34:36Z",
    "title_canon_sha256": "0172f87320734bb17712301ef760503039906f603a86e9977deb418ba3c27e10"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.0275",
    "kind": "arxiv",
    "version": 1
  }
}