Pith Number

pith:7LHCPLBI

pith:2016:7LHCPLBILRWA4G3NXYYEYAA6PQ

not attested not anchored not stored refs pending

Parameterizing Region Covariance: An Efficient Way To Apply Sparse Codes On Second Order Statistics

Larry S. Davis, Sameh Khamis, Xiyang Dai, Yangmuzi Zhang

arxiv:1602.02822 v1 · 2016-02-09 · 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{7LHCPLBILRWA4G3NXYYEYAA6PQ}

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	2026-05-18T01:21:08.075057Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

face27ac285c6c0e1b6dbe304c001e7c08f5db1e8e2b8b97c2ac8a0609c20038

Aliases

arxiv: 1602.02822 · arxiv_version: 1602.02822v1 · doi: 10.48550/arxiv.1602.02822 · pith_short_12: 7LHCPLBILRWA · pith_short_16: 7LHCPLBILRWA4G3N · pith_short_8: 7LHCPLBI

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/7LHCPLBILRWA4G3NXYYEYAA6PQ \
  | 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: face27ac285c6c0e1b6dbe304c001e7c08f5db1e8e2b8b97c2ac8a0609c20038

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9477fcab19eb91f75eef81e0da0f4398202118212eaf52b2900472de4c5e0a27",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2016-02-09T00:07:05Z",
    "title_canon_sha256": "e6e34c103a6823dc667187954e457c54fbba9e203d507c5393d1fcb9786fcd18"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.02822",
    "kind": "arxiv",
    "version": 1
  }
}