Pith Number

pith:RUU5J55L

pith:2008:RUU5J55LFIIASOTQGVM2Q24WKD

not attested not anchored not stored refs pending

Group-invariant solutions of a nonlinear acoustics model

J. C. Ndogmo

arxiv:0806.4359 v2 · 2008-06-26 · math.AP · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RUU5J55LFIIASOTQGVM2Q24WKD}

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	2026-05-18T02:20:50.251611Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d29d4f7ab2a10093a703559a86b9650dfdd6feb4e793c21f01c4ce1a9723aa1

Aliases

arxiv: 0806.4359 · arxiv_version: 0806.4359v2 · doi: 10.48550/arxiv.0806.4359 · pith_short_12: RUU5J55LFIIA · pith_short_16: RUU5J55LFIIASOTQ · pith_short_8: RUU5J55L

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/RUU5J55LFIIASOTQGVM2Q24WKD \
  | 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: 8d29d4f7ab2a10093a703559a86b9650dfdd6feb4e793c21f01c4ce1a9723aa1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d613d41bd75bd487f41226f973cb5299e60e8b683a145d04ce7163bdca1d78b7",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2008-06-26T16:24:38Z",
    "title_canon_sha256": "727fa51dc372e2ed631dbf68e7fdc0a4d40c01a819395a4d88a5d8e717848602"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0806.4359",
    "kind": "arxiv",
    "version": 2
  }
}