Pith Number

pith:PZR7JZPI

pith:2012:PZR7JZPI5HE4Y5KAERJGTGGSCH

not attested not anchored not stored refs pending

One-dimensional collision carts computer model and its design ideas for productive experiential learning

Loo Kang Wee

arxiv:1204.4964 v2 · 2012-04-23 · physics.ed-ph · physics.class-ph · physics.comp-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{PZR7JZPI5HE4Y5KAERJGTGGSCH}

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	2026-05-18T01:23:49.217057Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e63f4e5e8e9c9cc754024526998d211c78ef8efa5bc94b49214cbcfbbc575f3

Aliases

arxiv: 1204.4964 · arxiv_version: 1204.4964v2 · doi: 10.48550/arxiv.1204.4964 · pith_short_12: PZR7JZPI5HE4 · pith_short_16: PZR7JZPI5HE4Y5KA · pith_short_8: PZR7JZPI

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/PZR7JZPI5HE4Y5KAERJGTGGSCH \
  | 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: 7e63f4e5e8e9c9cc754024526998d211c78ef8efa5bc94b49214cbcfbbc575f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d339b2e2679d2028ca8f42968cca5a666c19a33a8219a23040c564f697512f11",
    "cross_cats_sorted": [
      "physics.class-ph",
      "physics.comp-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2012-04-23T02:42:18Z",
    "title_canon_sha256": "3281197d2747b1cf865cb177b3fe1fc205c2c98c8b5dd8a95f40fae98d43b16b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.4964",
    "kind": "arxiv",
    "version": 2
  }
}