Pith Number

pith:B5GYF4DZ

pith:2011:B5GYF4DZR2XV4TVZ7TJS7DOQPD

not attested not anchored not stored refs pending

Discriminative Local Sparse Representations for Robust Face Recognition

Thong T. Do, Trac D. Tran, Umamahesh Srinivas, Vishal Monga, Yi Chen

arxiv:1111.1947 v1 · 2011-11-08 · 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{B5GYF4DZR2XV4TVZ7TJS7DOQPD}

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	2026-05-18T04:09:24.348348Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f4d82f0798eaf5e4eb9fcd32f8dd078f51dcf1c3c3620f420411de518f1bf00

Aliases

arxiv: 1111.1947 · arxiv_version: 1111.1947v1 · doi: 10.48550/arxiv.1111.1947 · pith_short_12: B5GYF4DZR2XV · pith_short_16: B5GYF4DZR2XV4TVZ · pith_short_8: B5GYF4DZ

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/B5GYF4DZR2XV4TVZ7TJS7DOQPD \
  | 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: 0f4d82f0798eaf5e4eb9fcd32f8dd078f51dcf1c3c3620f420411de518f1bf00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c322b8dede5015dc3ee4be82cc230371c18d1d80f9aacbcbca3573e8223a91d1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2011-11-08T16:04:58Z",
    "title_canon_sha256": "b6deeaa8fc4ab6d35278d7474888d0549ad170fee577c47efc436ba3decf347c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.1947",
    "kind": "arxiv",
    "version": 1
  }
}