Pith Number

pith:XAPYTEEE

pith:2015:XAPYTEEEZWAA36VOKWGO67FU47

not attested not anchored not stored refs pending

Error Gradient-based Variable-Lp Norm Constraint LMS Algorithm for Sparse System Identification

Fei Chen, Huazhong Shu, Jiasong Wu, Rui Zeng, Yong Feng

arxiv:1509.07951 v1 · 2015-09-26 · 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{XAPYTEEEZWAA36VOKWGO67FU47}

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	2026-05-18T01:31:55.052963Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b81f899084cd800dfaae558cef7cb4e7ddc28a2cc98c79fcc34a768eec3a18dc

Aliases

arxiv: 1509.07951 · arxiv_version: 1509.07951v1 · doi: 10.48550/arxiv.1509.07951 · pith_short_12: XAPYTEEEZWAA · pith_short_16: XAPYTEEEZWAA36VO · pith_short_8: XAPYTEEE

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/XAPYTEEEZWAA36VOKWGO67FU47 \
  | 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: b81f899084cd800dfaae558cef7cb4e7ddc28a2cc98c79fcc34a768eec3a18dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b18814b1c54d72bfa8d3bc6f01b3a613e8581b81d3311b660c138b6da6c49595",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2015-09-26T09:01:56Z",
    "title_canon_sha256": "ca3b22ffdaacfcab846d692fc4ea97a75e19a0ad2caaa7d5c58331d8e0e98571"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.07951",
    "kind": "arxiv",
    "version": 1
  }
}