Pith Number

pith:4T3ZAE5J

pith:2014:4T3ZAE5J3U3GPEIT6MFVASCHAO

not attested not anchored not stored refs pending

Ermakov-Lewis Invariants and Reid Systems

Haret C Rosu, Stefan C Mancas

arxiv:1402.4402 v2 · 2014-02-18 · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4T3ZAE5J3U3GPEIT6MFVASCHAO}

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	2026-05-18T02:48:17.241917Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4f79013a9dd36679113f30b50484703a755df28eebc9709acb31e426bb94751

Aliases

arxiv: 1402.4402 · arxiv_version: 1402.4402v2 · doi: 10.48550/arxiv.1402.4402 · pith_short_12: 4T3ZAE5J3U3G · pith_short_16: 4T3ZAE5J3U3GPEIT · pith_short_8: 4T3ZAE5J

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/4T3ZAE5J3U3GPEIT6MFVASCHAO \
  | 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: e4f79013a9dd36679113f30b50484703a755df28eebc9709acb31e426bb94751

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "29c837456cb8eb9f14f1687dc746109d3856d06b7a9fcbb105e4f42108efc136",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2014-02-18T16:59:58Z",
    "title_canon_sha256": "6fd7ef6ef70fc8766da5573d3fca505814828bb633d593c967f049c7214ebd3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.4402",
    "kind": "arxiv",
    "version": 2
  }
}