Pith Number

pith:5K5YLRQ7

pith:2008:5K5YLRQ7F3F6EPQ25EYMQ5T4WA

not attested not anchored not stored refs pending

Chirplet approximation of band-limited, real signals made easy

J.M Greenberg, Laurent Gosse (CNR BARI)

arxiv:0809.3711 v1 · 2008-09-22 · math.NA · cs.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{5K5YLRQ7F3F6EPQ25EYMQ5T4WA}

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	2026-06-03T22:06:10.151176Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eabb85c61f2ecbe23e1ae930c8767cb03970ebe668262e95122aa6e34bc68a67

Aliases

arxiv: 0809.3711 · arxiv_version: 0809.3711v1 · doi: 10.48550/arxiv.0809.3711 · pith_short_12: 5K5YLRQ7F3F6 · pith_short_16: 5K5YLRQ7F3F6EPQ2 · pith_short_8: 5K5YLRQ7

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/5K5YLRQ7F3F6EPQ25EYMQ5T4WA \
  | 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: eabb85c61f2ecbe23e1ae930c8767cb03970ebe668262e95122aa6e34bc68a67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c41e5bfb7724609be686f03be4f01244237081385573d57cd2dfa399dd22f9e",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2008-09-22T13:59:49Z",
    "title_canon_sha256": "148ca939ebe99645a5c7280d466d9ba5fc5f39f4a45debbcffffb5e84d01937f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.3711",
    "kind": "arxiv",
    "version": 1
  }
}