Pith Number

pith:63XC7OB3

pith:2020:63XC7OB3LEVG67UHS6EPZAECUS

not attested not anchored not stored refs pending

Constrained low-rank quaternion approximation for color image denoising by bilateral random projections

Jifei Miao, Kit Ian Kou

arxiv:2006.00749 v1 · 2020-06-01 · eess.IV · cs.NA · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{63XC7OB3LEVG67UHS6EPZAECUS}

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	2026-07-05T01:07:05.012195Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6ee2fb83b592a6f7e879788fc8082a4a4016704f35a65dc746201250af2b462

Aliases

arxiv: 2006.00749 · arxiv_version: 2006.00749v1 · doi: 10.48550/arxiv.2006.00749 · pith_short_12: 63XC7OB3LEVG · pith_short_16: 63XC7OB3LEVG67UH · pith_short_8: 63XC7OB3

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/63XC7OB3LEVG67UHS6EPZAECUS \
  | 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: f6ee2fb83b592a6f7e879788fc8082a4a4016704f35a65dc746201250af2b462

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6edbd2ab9331e654fe9508ba246646295b487226994dc271363b496fee06bb3e",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2020-06-01T06:59:17Z",
    "title_canon_sha256": "0f2c45d5184d2bb83294e240258e169ed9fdf3abe91bbd6c09220ab22e20b1bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2006.00749",
    "kind": "arxiv",
    "version": 1
  }
}