Pith Number

pith:W5PIKXUD

pith:2011:W5PIKXUDSCWMOM5HMBIWLLSLT3

not attested not anchored not stored refs pending

On the variational homotopy perturbation method for nonlinear oscillators

Francisco M. Fern\'andez

arxiv:1103.1895 v1 · 2011-03-09 · 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{W5PIKXUDSCWMOM5HMBIWLLSLT3}

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	2026-05-18T02:02:55.456020Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b75e855e8390acc733a7605165ae4b9eefafa07f149973d9859d4f8946b77ff7

Aliases

arxiv: 1103.1895 · arxiv_version: 1103.1895v1 · doi: 10.48550/arxiv.1103.1895 · pith_short_12: W5PIKXUDSCWM · pith_short_16: W5PIKXUDSCWMOM5H · pith_short_8: W5PIKXUD

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/W5PIKXUDSCWMOM5HMBIWLLSLT3 \
  | 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: b75e855e8390acc733a7605165ae4b9eefafa07f149973d9859d4f8946b77ff7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dccb8ad4cc048ddd76375163b23c28ffb3be6635d70243d8f83064d6887c2573",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2011-03-09T21:36:37Z",
    "title_canon_sha256": "f6c21fdc71bc182d355cdfa37553b95803c806a003f04e616a5f9d836baa299c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.1895",
    "kind": "arxiv",
    "version": 1
  }
}