Pith Number

pith:NAHRZWAR

pith:2026:NAHRZWAR23QBMWH2OKXH5HZS2O

not attested not anchored not stored refs pending

High-order synchrosqueezed wavelet-chirplet transform for instantaneous frequency and chirprate estimation

Gang Yu, Jiecheng Chen, Qingtang Jiang, Shuixin Li

arxiv:2606.01965 v1 · 2026-06-01 · eess.SP · cs.NA · 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{NAHRZWAR23QBMWH2OKXH5HZS2O}

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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	2026-06-02T02:05:02.174575Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

680f1cd811d6e01658fa72ae7e9f32d382040a884b0449d2490e300e8e00fb5c

Aliases

arxiv: 2606.01965 · arxiv_version: 2606.01965v1 · doi: 10.48550/arxiv.2606.01965 · pith_short_12: NAHRZWAR23QB · pith_short_16: NAHRZWAR23QBMWH2 · pith_short_8: NAHRZWAR

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/NAHRZWAR23QBMWH2OKXH5HZS2O \
  | 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: 680f1cd811d6e01658fa72ae7e9f32d382040a884b0449d2490e300e8e00fb5c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16eb39a7bcf4aab7c7bf4a727e6f22493e0b7aff42b31da5c56625ef23cb0a9b",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2026-06-01T09:30:34Z",
    "title_canon_sha256": "3a47c3db18bf3c7bcd2cf1d3e6b4bea9c53eaa121892ab2222fb32442980f637"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.01965",
    "kind": "arxiv",
    "version": 1
  }
}