Pith Number

pith:OHMAO7RL

pith:2021:OHMAO7RLH456XCMBWJOMEF2MAQ

not attested not anchored not stored refs pending

Disentangling modes with crossover instantaneous frequencies by synchrosqueezed chirplet transforms, from theory to application

Hau-Tieng Wu, Ziyu Chen

arxiv:2112.01857 v2 · 2021-12-03 · math.NA · cs.NA · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OHMAO7RLH456XCMBWJOMEF2MAQ}

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	2026-07-05T04:33:27.210155Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

71d8077e2b3f3beb8981b25cc2174c040c273f6434d60dc3557fa883e77ed8d7

Aliases

arxiv: 2112.01857 · arxiv_version: 2112.01857v2 · doi: 10.48550/arxiv.2112.01857 · pith_short_12: OHMAO7RLH456 · pith_short_16: OHMAO7RLH456XCMB · pith_short_8: OHMAO7RL

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/OHMAO7RLH456XCMBWJOMEF2MAQ \
  | 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: 71d8077e2b3f3beb8981b25cc2174c040c273f6434d60dc3557fa883e77ed8d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "877910af40bb567fdc89abb2b2c27ef3a25151363b545ef278682fab35cad71a",
    "cross_cats_sorted": [
      "cs.NA",
      "eess.SP"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2021-12-03T11:21:42Z",
    "title_canon_sha256": "5c6979d31700fe4a01b767d41b7a063f0c3ffe8ae74797dacac6b06e8dae7ea7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.01857",
    "kind": "arxiv",
    "version": 2
  }
}