Pith Number

pith:QFQ5Q3S5

pith:2013:QFQ5Q3S5CPCUFTH3L5N6LKGTVR

not attested not anchored not stored refs pending

On the extraction of instantaneous frequencies from ridges in time-frequency representations of signals

Aneta Stefanovska, Dmytro Iatsenko, Peter V. E. McClintock

arxiv:1310.7276 v3 · 2013-10-27 · cs.CE · math.NA · physics.data-an

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QFQ5Q3S5CPCUFTH3L5N6LKGTVR}

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	2026-05-18T01:32:01.373111Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8161d86e5d13c542ccfb5f5be5a8d3ac45a44c5a1a0a61f0daf3016d46c74f75

Aliases

arxiv: 1310.7276 · arxiv_version: 1310.7276v3 · doi: 10.48550/arxiv.1310.7276 · pith_short_12: QFQ5Q3S5CPCU · pith_short_16: QFQ5Q3S5CPCUFTH3 · pith_short_8: QFQ5Q3S5

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/QFQ5Q3S5CPCUFTH3L5N6LKGTVR \
  | 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: 8161d86e5d13c542ccfb5f5be5a8d3ac45a44c5a1a0a61f0daf3016d46c74f75

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1731a6d2b39a475e144c209b561e9dc18d3e980db108e3ef78667287ba747e6c",
    "cross_cats_sorted": [
      "math.NA",
      "physics.data-an"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CE",
    "submitted_at": "2013-10-27T23:41:43Z",
    "title_canon_sha256": "6b0347ad70584cef987743cfe75a74a1809931c64ce53371597b1b5433c22582"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.7276",
    "kind": "arxiv",
    "version": 3
  }
}