Pith Number

pith:CT55VPNJ

pith:2010:CT55VPNJ3EUSFS6U6PHMVKK6QK

not attested not anchored not stored refs pending

The Projective Andoyer transformation and the connection between the 4-D isotropic oscillator and Kepler systems

Sebasti\'an Ferrer

arxiv:1011.3000 v1 · 2010-11-12 · nlin.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CT55VPNJ3EUSFS6U6PHMVKK6QK}

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	2026-05-18T04:36:07.619084Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

14fbdabda9d92922cbd4f3cecaa95e828fd8cc875d47b946f228705b7342584d

Aliases

arxiv: 1011.3000 · arxiv_version: 1011.3000v1 · doi: 10.48550/arxiv.1011.3000 · pith_short_12: CT55VPNJ3EUS · pith_short_16: CT55VPNJ3EUSFS6U · pith_short_8: CT55VPNJ

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/CT55VPNJ3EUSFS6U6PHMVKK6QK \
  | 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: 14fbdabda9d92922cbd4f3cecaa95e828fd8cc875d47b946f228705b7342584d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "839446cc18dbd9dec229ebef8a6d303f1af263bb811d6c347813d3c6bd0c0f7f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2010-11-12T18:16:59Z",
    "title_canon_sha256": "8c7a004dd1cf0dd3a3b0aab8f500bce132290e12bf7cf17c6fa3a25037df3895"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.3000",
    "kind": "arxiv",
    "version": 1
  }
}