Pith Number

pith:ICD2XLMD

pith:2012:ICD2XLMDEZYP3XER4YHA3YA53E

not attested not anchored not stored refs pending

L1-norm minimization for quaternion signals

Huazhong Shu, Jiasong Wu, Lotfi Senhadji, Xiaoqing Wang, Xu Zhang

arxiv:1202.5471 v1 · 2012-02-24 · cs.NA · cs.DS · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ICD2XLMDEZYP3XER4YHA3YA53E}

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	2026-05-18T04:01:37.041048Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4087abad832670fddc91e60e0de01dd90df7695bea877210a8177cbc51ce3ffa

Aliases

arxiv: 1202.5471 · arxiv_version: 1202.5471v1 · doi: 10.48550/arxiv.1202.5471 · pith_short_12: ICD2XLMDEZYP · pith_short_16: ICD2XLMDEZYP3XER · pith_short_8: ICD2XLMD

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/ICD2XLMDEZYP3XER4YHA3YA53E \
  | 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: 4087abad832670fddc91e60e0de01dd90df7695bea877210a8177cbc51ce3ffa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "48d317e717eb883a7d1974fa5dd1f971b492f2479ec80a5518b9fbefd0bfb81c",
    "cross_cats_sorted": [
      "cs.DS",
      "cs.IT",
      "math.IT"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2012-02-24T15:01:37Z",
    "title_canon_sha256": "356318f848492604ffbaa919706c5571e69630608e19db21ca1c81206e9bad42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.5471",
    "kind": "arxiv",
    "version": 1
  }
}