Pith Number

pith:NFDYFQD7

pith:2015:NFDYFQD7PPNMJBB3JIVT77DKFT

not attested not anchored not stored refs pending

A Novel Variable Step Size NLMS Algorithm Based on the Power Estimate of the System Noise

Haiquan Zhao, Yi Yu

arxiv:1504.05323 v1 · 2015-04-21 · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NFDYFQD7PPNMJBB3JIVT77DKFT}

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	2026-05-18T02:18:14.542261Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

694782c07f7bdac4843b4a2b3ffc6a2ccda3831fdc8a5e6170a4caea40ef7a10

Aliases

arxiv: 1504.05323 · arxiv_version: 1504.05323v1 · doi: 10.48550/arxiv.1504.05323 · pith_short_12: NFDYFQD7PPNM · pith_short_16: NFDYFQD7PPNMJBB3 · pith_short_8: NFDYFQD7

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/NFDYFQD7PPNMJBB3JIVT77DKFT \
  | 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: 694782c07f7bdac4843b4a2b3ffc6a2ccda3831fdc8a5e6170a4caea40ef7a10

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e5aa658fc6783d5d1c786ad4122303176b356bf98392b60b92a3deb1b9907d06",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2015-04-21T07:24:15Z",
    "title_canon_sha256": "76c6f290828a1e2b017ea635d079d3ee96120c3a8764f68b9e63943dac75b883"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.05323",
    "kind": "arxiv",
    "version": 1
  }
}