Pith Number

pith:3NAROA23

pith:2019:3NAROA23LAAP6HUA46SFN3EVOB

not attested not anchored not stored refs pending

Introduction to the Differential Algebra Normal Form Algorithm using the Centrifugal Governor as an Example

Adrian Weisskopf

arxiv:1906.10758 v1 · 2019-06-26 · 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{3NAROA23LAAP6HUA46SFN3EVOB}

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	2026-05-17T23:42:14.851178Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db4117035b5800ff1e80e7a456ec95706cc2619f462b6cc9e2df3321a7926d8a

Aliases

arxiv: 1906.10758 · arxiv_version: 1906.10758v1 · doi: 10.48550/arxiv.1906.10758 · pith_short_12: 3NAROA23LAAP · pith_short_16: 3NAROA23LAAP6HUA · pith_short_8: 3NAROA23

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/3NAROA23LAAP6HUA46SFN3EVOB \
  | 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: db4117035b5800ff1e80e7a456ec95706cc2619f462b6cc9e2df3321a7926d8a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f342958b639f1982906475294b16bfb06f9e3388097bc116ad95d69e84e108f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2019-06-26T13:25:08Z",
    "title_canon_sha256": "a6b48589694292d6e22a7cb5b8e88252631abce16caa4d01b4493274086a8b13"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.10758",
    "kind": "arxiv",
    "version": 1
  }
}