Pith Number

pith:WRVF4VUI

pith:2014:WRVF4VUI36REFHKBA5YIOSXXI4

not attested not anchored not stored refs pending

A Zero-attracting Quaternion-valued Least Mean Square Algorithm for Sparse System Identification

Mengdi Jiang, Wei Liu, Yi Li

arxiv:1406.5721 v1 · 2014-06-22 · math.NA · math.CV · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WRVF4VUI36REFHKBA5YIOSXXI4}

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	2026-05-18T02:49:10.867944Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b46a5e5688dfa2429d410770874af7470d0d7507113f32046e4683da23903ac6

Aliases

arxiv: 1406.5721 · arxiv_version: 1406.5721v1 · doi: 10.48550/arxiv.1406.5721 · pith_short_12: WRVF4VUI36RE · pith_short_16: WRVF4VUI36REFHKB · pith_short_8: WRVF4VUI

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/WRVF4VUI36REFHKBA5YIOSXXI4 \
  | 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: b46a5e5688dfa2429d410770874af7470d0d7507113f32046e4683da23903ac6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad5da391ad78b11509f2dfcd821ed92372a56bdfb6190a7d217ce844ead3ab05",
    "cross_cats_sorted": [
      "math.CV",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-06-22T13:00:08Z",
    "title_canon_sha256": "a05fd83ef8803044e90a9636399b77af72cf8a5d5f0257b4e47a8323e9505a8b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.5721",
    "kind": "arxiv",
    "version": 1
  }
}