Pith Number

pith:DDUU64HZ

pith:2026:DDUU64HZYTNU5GFHG3Y2ELEZUU

not attested not anchored not stored refs pending

Roller coaster dynamics -- from point particles to a continuum model using Lagrange density

Holger Cartarius, Michael Kaschke

arxiv:2603.27230 v1 · 2026-03-28 · physics.ed-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DDUU64HZYTNU5GFHG3Y2ELEZUU}

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	2026-06-04T00:06:50.785419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18e94f70f9c4db4e98a736f1a22c99a5057b1880927a703322ecd3ccdabca353

Aliases

arxiv: 2603.27230 · arxiv_version: 2603.27230v1 · doi: 10.48550/arxiv.2603.27230 · pith_short_12: DDUU64HZYTNU · pith_short_16: DDUU64HZYTNU5GFH · pith_short_8: DDUU64HZ

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/DDUU64HZYTNU5GFHG3Y2ELEZUU \
  | 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: 18e94f70f9c4db4e98a736f1a22c99a5057b1880927a703322ecd3ccdabca353

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e0414074d25d7d3d67556f9bb3017c8f498dd6929c9bcdf2d230c8e43b7f5a5",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2026-03-28T10:55:06Z",
    "title_canon_sha256": "37c9197da61d230022ba8527e215c54cf0794a9424e62fbb2f756fd906e6419d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.27230",
    "kind": "arxiv",
    "version": 1
  }
}