Pith Number

pith:XAL3Z4ML

pith:2017:XAL3Z4MLUNNG7DN6WCCULELW5P

not attested not anchored not stored refs pending

An Extended Kalman Filter Enhanced Hilbert-Huang Transform in Oscillation Detection

Di Shi, Haifeng Li, Yishen Wang, Zhehan Yi, Zhe Yu, Zhiwei Wang

arxiv:1711.04644 v1 · 2017-11-08 · eess.SP · 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{XAL3Z4MLUNNG7DN6WCCULELW5P}

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	2026-05-18T00:30:36.027488Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b817bcf18ba35a6f8dbeb085459176ebf56a1b56451e574ac21e821ed9c0971b

Aliases

arxiv: 1711.04644 · arxiv_version: 1711.04644v1 · doi: 10.48550/arxiv.1711.04644 · pith_short_12: XAL3Z4MLUNNG · pith_short_16: XAL3Z4MLUNNG7DN6 · pith_short_8: XAL3Z4ML

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/XAL3Z4MLUNNG7DN6WCCULELW5P \
  | 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: b817bcf18ba35a6f8dbeb085459176ebf56a1b56451e574ac21e821ed9c0971b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b101a4f4fa3cd55341bd6c82679cd75f8b269879c9292e18e6f64b445d3e4798",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2017-11-08T18:27:29Z",
    "title_canon_sha256": "d03190a392bebce3c643abd0781c25d67744bc05d95e1d5bdae4cbbaf401d515"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.04644",
    "kind": "arxiv",
    "version": 1
  }
}