Pith Number

pith:N5H4KSWH

pith:2016:N5H4KSWHGQIE6VUKO3OUVAXUXV

not attested not anchored not stored refs pending

On the number of limit cycles for perturbed pendulum equations

Anna Geyer, Armengol Gasull, Francesc Ma\~nosas

arxiv:1602.00617 v1 · 2016-02-01 · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N5H4KSWHGQIE6VUKO3OUVAXUXV}

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	2026-05-18T01:21:33.244536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f4fc54ac734104f568a76dd4a82f4bd4d3545cd98a82531ec775f2b617f3c2c

Aliases

arxiv: 1602.00617 · arxiv_version: 1602.00617v1 · doi: 10.48550/arxiv.1602.00617 · pith_short_12: N5H4KSWHGQIE · pith_short_16: N5H4KSWHGQIE6VUK · pith_short_8: N5H4KSWH

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/N5H4KSWHGQIE6VUKO3OUVAXUXV \
  | 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: 6f4fc54ac734104f568a76dd4a82f4bd4d3545cd98a82531ec775f2b617f3c2c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "578bb7d8e616072a694c5591b5b41744f9ad2a129813de3879fee299264222d7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2016-02-01T17:57:55Z",
    "title_canon_sha256": "a703bdeded8b0f594087b525185a39d5ab24a16aba3bc1f87a2626306c821566"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.00617",
    "kind": "arxiv",
    "version": 1
  }
}