Pith Number

pith:R2I65BA6

pith:2013:R2I65BA6LCKPTVYKHYNRJLBPE7

not attested not anchored not stored refs pending

On the nonlinear dynamics of a position-dependent mass-driven Duffing-type oscillator: Lagrange and Newton equations' equivalence

Omar Mustafa

arxiv:1304.5331 v1 · 2013-04-19 · physics.class-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R2I65BA6LCKPTVYKHYNRJLBPE7}

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	2026-05-18T03:13:21.454026Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e91ee841e5894f9d70a3e1b14ac2f27d85af59f338d3f28653923a4014c25ee

Aliases

arxiv: 1304.5331 · arxiv_version: 1304.5331v1 · doi: 10.48550/arxiv.1304.5331 · pith_short_12: R2I65BA6LCKP · pith_short_16: R2I65BA6LCKPTVYK · pith_short_8: R2I65BA6

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/R2I65BA6LCKPTVYKHYNRJLBPE7 \
  | 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: 8e91ee841e5894f9d70a3e1b14ac2f27d85af59f338d3f28653923a4014c25ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8119fdb02b9a79882b86f26149b78a10f5692ffc038560ea2f5134c3893684e3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2013-04-19T07:24:36Z",
    "title_canon_sha256": "43ddcf678cb86e24892a89881bfcb948614e42dce4efb56f3760ab374dfe1977"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.5331",
    "kind": "arxiv",
    "version": 1
  }
}