Pith Number

pith:MC7PHCGR

pith:2014:MC7PHCGREKJCWOIX5P4S2TDQYY

not attested not anchored not stored refs pending

The Not-so-simple Pendulum: Balancing a Pencil on its Point

Peter Lynch

arxiv:1406.1125 v1 · 2014-06-04 · nlin.SI · physics.class-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MC7PHCGREKJCWOIX5P4S2TDQYY}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:50:30.271397Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60bef388d122922b3917ebf92d4c70c63b5c5e4203bec05af3bd0365a09c701b

Aliases

arxiv: 1406.1125 · arxiv_version: 1406.1125v1 · doi: 10.48550/arxiv.1406.1125 · pith_short_12: MC7PHCGREKJC · pith_short_16: MC7PHCGREKJCWOIX · pith_short_8: MC7PHCGR

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/MC7PHCGREKJCWOIX5P4S2TDQYY \
  | 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: 60bef388d122922b3917ebf92d4c70c63b5c5e4203bec05af3bd0365a09c701b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de5e7fece8322cbfd1df15d959a785abe6a0929818dab9eafb4f288babed3d6a",
    "cross_cats_sorted": [
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2014-06-04T17:57:57Z",
    "title_canon_sha256": "dbf25f1c9c6b79c417a7dccae397b9bf2dff8a2df4575e213e2aecbd0905c703"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.1125",
    "kind": "arxiv",
    "version": 1
  }
}