Pith Number

pith:HC7227IG

pith:2018:HC7227IGXAAXGQN2XMCTSG6ACM

not attested not anchored not stored refs pending

Sample-Relaxed Two-Dimensional Color Principal Component Analysis for Face Recognition and Image Reconstruction

Dunwei Gong, Meixiang Zhao, Zhigang Jia

arxiv:1803.03837 v1 · 2018-03-10 · 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{HC7227IGXAAXGQN2XMCTSG6ACM}

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	2026-05-18T00:21:33.632036Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38bfad7d06b8017341babb05391bc013084bebc4d93fbd22c70d8c09e0cd6c25

Aliases

arxiv: 1803.03837 · arxiv_version: 1803.03837v1 · doi: 10.48550/arxiv.1803.03837 · pith_short_12: HC7227IGXAAX · pith_short_16: HC7227IGXAAXGQN2 · pith_short_8: HC7227IG

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/HC7227IGXAAXGQN2XMCTSG6ACM \
  | 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: 38bfad7d06b8017341babb05391bc013084bebc4d93fbd22c70d8c09e0cd6c25

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "210174eef61a88e7aca4eafc6e43de2ff1164e5508d07ece1a2254d7b30e2b4e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-03-10T16:49:54Z",
    "title_canon_sha256": "a142a936331eeb4e1fe13fbe3c4ff7756f20e99e30222ad46f618d564db3e84c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.03837",
    "kind": "arxiv",
    "version": 1
  }
}