Pith Number

pith:6VBTVPNU

pith:2022:6VBTVPNUIB2E7RLCEG6D273Y2A

not attested not anchored not stored refs pending

On the Equilibria and Bifurcations of a Rotating Double Pendulum

Jonathan Tot, Robert H. Lewis

arxiv:2204.12437 v2 · 2022-04-25 · math.DS · math-ph · math.CA · 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{6VBTVPNUIB2E7RLCEG6D273Y2A}

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	2026-07-05T04:21:12.792616Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5433abdb440744fc56221bc3d7f78d018e7ea9c75de6c593eb4e79ee8f1f61b

Aliases

arxiv: 2204.12437 · arxiv_version: 2204.12437v2 · doi: 10.48550/arxiv.2204.12437 · pith_short_12: 6VBTVPNUIB2E · pith_short_16: 6VBTVPNUIB2E7RLC · pith_short_8: 6VBTVPNU

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/6VBTVPNUIB2E7RLCEG6D273Y2A \
  | 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: f5433abdb440744fc56221bc3d7f78d018e7ea9c75de6c593eb4e79ee8f1f61b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7ab65ea5e25aec0175474ec5298272730d825c78a71b1faf61639adefe9476b",
    "cross_cats_sorted": [
      "math-ph",
      "math.CA",
      "math.MP"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2022-04-25T02:18:10Z",
    "title_canon_sha256": "50514877252cef8ca7b66f73a1aa2178aa64f72e7bcbc9cb1eedb8e364674a5d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2204.12437",
    "kind": "arxiv",
    "version": 2
  }
}