Pith Number

pith:QWC2AN6M

pith:2013:QWC2AN6MDJHF4T7FLKBTB5MILB

not attested not anchored not stored refs pending

Non-existence of an invariant measure for a homogeneous ellipsoid rolling on the plane

Juan C. Marrero, Luis C. Garc\'ia-Naranjo

arxiv:1306.4237 v2 · 2013-06-18 · 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{QWC2AN6MDJHF4T7FLKBTB5MILB}

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	2026-05-18T01:49:15.524497Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8585a037cc1a4e5e4fe55a8330f588585be00fe4051b8ecd7398e3e52aae8365

Aliases

arxiv: 1306.4237 · arxiv_version: 1306.4237v2 · doi: 10.48550/arxiv.1306.4237 · pith_short_12: QWC2AN6MDJHF · pith_short_16: QWC2AN6MDJHF4T7F · pith_short_8: QWC2AN6M

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/QWC2AN6MDJHF4T7FLKBTB5MILB \
  | 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: 8585a037cc1a4e5e4fe55a8330f588585be00fe4051b8ecd7398e3e52aae8365

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "053857fdc7d462e827c3e8d59c52dbc55045c486eb4ea3225b467cded48c2d26",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2013-06-18T15:17:09Z",
    "title_canon_sha256": "f68d5e1f73a30df188f528389decdedc53e8d9161f83ef3d9ff0ec5a993298df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.4237",
    "kind": "arxiv",
    "version": 2
  }
}