Pith Number

pith:VXOHMAEA

pith:2020:VXOHMAEAHILS46KFHVGF3X3Z7D

not attested not anchored not stored refs pending

Generalized Two-Dimensional Quaternion Principal Component Analysis with Weighting for Color Image Recognition

Dan-Dan Zhu, Mei-Xiang Zhao, Qian-Yu Wang, Zhi-Gang Jia, Zi-Jin Qiu

arxiv:2010.01477 v2 · 2020-10-04 · 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{VXOHMAEAHILS46KFHVGF3X3Z7D}

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	2026-07-05T06:19:32.736804Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

addc7600803a172e79453d4c5ddf79f8ce73dc5d8da115330592bd3d21a432d8

Aliases

arxiv: 2010.01477 · arxiv_version: 2010.01477v2 · doi: 10.48550/arxiv.2010.01477 · pith_short_12: VXOHMAEAHILS · pith_short_16: VXOHMAEAHILS46KF · pith_short_8: VXOHMAEA

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/VXOHMAEAHILS46KFHVGF3X3Z7D \
  | 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: addc7600803a172e79453d4c5ddf79f8ce73dc5d8da115330592bd3d21a432d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3880ac2057c4c1663f59f275b9fb6884f72eab0b0ab668626177f2dd7bdc819c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2020-10-04T03:37:23Z",
    "title_canon_sha256": "9fdba9b203f130d0c4ac7d9cc402e01e8b1b5a96787e8772bf5df4bb2980e72a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2010.01477",
    "kind": "arxiv",
    "version": 2
  }
}