Pith Number

pith:66K2VP2I

pith:2015:66K2VP2I2342PJMIL7AVMFIMFG

not attested not anchored not stored refs pending

Color Image Classification via Quaternion Principal Component Analysis Network

Huazhong Shu, Jiasong Wu, Lotfi Senhadji, Rui Zeng, Yang Chen, Zhuhong Shao

arxiv:1503.01657 v1 · 2015-03-05 · 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{66K2VP2I2342PJMIL7AVMFIMFG}

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	2026-05-18T02:25:33.185178Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f795aabf48d6f9a7a5885fc156150c29b9d1b7279632f9782683f71cb44d3346

Aliases

arxiv: 1503.01657 · arxiv_version: 1503.01657v1 · doi: 10.48550/arxiv.1503.01657 · pith_short_12: 66K2VP2I2342 · pith_short_16: 66K2VP2I2342PJMI · pith_short_8: 66K2VP2I

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/66K2VP2I2342PJMIL7AVMFIMFG \
  | 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: f795aabf48d6f9a7a5885fc156150c29b9d1b7279632f9782683f71cb44d3346

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5b9ca20c4462058304910439834a81a85503c2c790738431925422d8022ea6c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2015-03-05T15:12:28Z",
    "title_canon_sha256": "17b211db9bcd2299afbd5cfcb16d323518072b4f7b5da0b62071f7a36e280bc4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.01657",
    "kind": "arxiv",
    "version": 1
  }
}