Pith Number

pith:YJCTULTB

pith:2010:YJCTULTBRBN3ABQINTGSCWJAVQ

not attested not anchored not stored refs pending

The comfortable roller coaster -- on the shape of tracks with constant normal force

Arne B. Nordmark, Hanno Essen

arxiv:1007.1394 v1 · 2010-07-08 · math-ph · math.MP · physics.class-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{YJCTULTBRBN3ABQINTGSCWJAVQ}

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	2026-05-18T02:06:23.852902Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c2453a2e61885bb006086ccd215920ac1c3819016960e275aa2080f5df2fd6d0

Aliases

arxiv: 1007.1394 · arxiv_version: 1007.1394v1 · doi: 10.48550/arxiv.1007.1394 · pith_short_12: YJCTULTBRBN3 · pith_short_16: YJCTULTBRBN3ABQI · pith_short_8: YJCTULTB

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/YJCTULTBRBN3ABQINTGSCWJAVQ \
  | 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: c2453a2e61885bb006086ccd215920ac1c3819016960e275aa2080f5df2fd6d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a8ab6953147a0894f8ef5c74f8d24e68d6da91b5e213598e9b775b7affcbdbf",
    "cross_cats_sorted": [
      "math.MP",
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2010-07-08T15:00:37Z",
    "title_canon_sha256": "a653defe2b21229b0e2bd2e45214262c4be1001a046ecaa396a7348bd7496a75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1007.1394",
    "kind": "arxiv",
    "version": 1
  }
}