Pith Number

pith:OVHPZ4G5

pith:2015:OVHPZ4G5O46KU2Z6U5GBC6FMO6

not attested not anchored not stored refs pending

Convex Optimization approach to signals with fast varying instantaneous frequency

Adrien Meynard, Hau-Tieng Wu, Matthieu Kowalski

arxiv:1503.07591 v2 · 2015-03-26 · math.NA · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OVHPZ4G5O46KU2Z6U5GBC6FMO6}

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	2026-05-18T01:18:52.740648Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

754efcf0dd773caa6b3ea74c1178ac77ac506b5d687e9dad8164417e821723cc

Aliases

arxiv: 1503.07591 · arxiv_version: 1503.07591v2 · doi: 10.48550/arxiv.1503.07591 · pith_short_12: OVHPZ4G5O46K · pith_short_16: OVHPZ4G5O46KU2Z6 · pith_short_8: OVHPZ4G5

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/OVHPZ4G5O46KU2Z6U5GBC6FMO6 \
  | 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: 754efcf0dd773caa6b3ea74c1178ac77ac506b5d687e9dad8164417e821723cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c725d3f34d2cc052594d76906aeede04a9b6104631175b9ad687fc56f9f3cb57",
    "cross_cats_sorted": [
      "stat.ME"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-03-26T01:17:21Z",
    "title_canon_sha256": "d48c366ca2445216e092a4fc8f11e5c17165cd1ab3ef36dafe8de66169fd0922"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.07591",
    "kind": "arxiv",
    "version": 2
  }
}