Pith Number

pith:HIVM3F6K

pith:2019:HIVM3F6KUG2SXMN2AI3QPT4NVQ

not attested not anchored not stored refs pending

Collaborative representation-based robust face recognition by discriminative low-rank representation

He-Feng Yin, Wen Zhao, Xiao-Jun Wu, Zi-Qi Li

arxiv:1912.07778 v1 · 2019-12-17 · cs.CV · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HIVM3F6KUG2SXMN2AI3QPT4NVQ}

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	2026-07-05T00:26:26.247349Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a2acd97caa1b52bb1ba023707cf8dac31a9f68306c38bcb5a3c1e30137dd1c2

Aliases

arxiv: 1912.07778 · arxiv_version: 1912.07778v1 · doi: 10.48550/arxiv.1912.07778 · pith_short_12: HIVM3F6KUG2S · pith_short_16: HIVM3F6KUG2SXMN2 · pith_short_8: HIVM3F6K

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/HIVM3F6KUG2SXMN2AI3QPT4NVQ \
  | 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: 3a2acd97caa1b52bb1ba023707cf8dac31a9f68306c38bcb5a3c1e30137dd1c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "31951a9f8af49263de8f36f741c6242bf13910c6cb51ec829fbc983aa06d1ba5",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-12-17T01:40:04Z",
    "title_canon_sha256": "dc1d2e473cd4e633a90bceb948e293026430ccd3d7090d65f3486db68ad6d03a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.07778",
    "kind": "arxiv",
    "version": 1
  }
}