Pith Number

pith:4IJANZ5V

pith:2019:4IJANZ5V4TUDLJS4H7QXSWRW44

not attested not anchored not stored refs pending

Geometric control theory of vertical rolling disc using symmetries

Ales Navrat, Jaroslav Hrdina, Lenka Zalabova

arxiv:1908.03352 v1 · 2019-08-09 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4IJANZ5V4TUDLJS4H7QXSWRW44}

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	2026-07-04T23:52:39.243259Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e21206e7b5e4e835a65c3fe1795a36e724052fa20db6a9b82b80da19fa91269a

Aliases

arxiv: 1908.03352 · arxiv_version: 1908.03352v1 · doi: 10.48550/arxiv.1908.03352 · pith_short_12: 4IJANZ5V4TUD · pith_short_16: 4IJANZ5V4TUDLJS4 · pith_short_8: 4IJANZ5V

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/4IJANZ5V4TUDLJS4H7QXSWRW44 \
  | 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: e21206e7b5e4e835a65c3fe1795a36e724052fa20db6a9b82b80da19fa91269a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e9293d417561cefd25dbc31af26a2fb94f6f0b4c247872ce34edceceb70be03",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2019-08-09T08:00:17Z",
    "title_canon_sha256": "305735265270382330e90da1fd09bbc92f7a3a9ed521880102366231594aa80b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.03352",
    "kind": "arxiv",
    "version": 1
  }
}