Pith Number

pith:2DXU74D6

pith:2019:2DXU74D6N6CZQZHOKYOWTW7I44

not attested not anchored not stored refs pending

The Lie algebra of classical mechanics

Ander Murua, Robert I McLachlan

arxiv:1905.07554 v1 · 2019-05-18 · math-ph · math.MP · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2DXU74D6N6CZQZHOKYOWTW7I44}

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	2026-05-17T23:45:49.349390Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d0ef4ff07e6f859864ee561d69dbe8e727c84aeea9c1e96c504f5b7e35456c52

Aliases

arxiv: 1905.07554 · arxiv_version: 1905.07554v1 · doi: 10.48550/arxiv.1905.07554 · pith_short_12: 2DXU74D6N6CZ · pith_short_16: 2DXU74D6N6CZQZHO · pith_short_8: 2DXU74D6

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/2DXU74D6N6CZQZHOKYOWTW7I44 \
  | 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: d0ef4ff07e6f859864ee561d69dbe8e727c84aeea9c1e96c504f5b7e35456c52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5fea4ed02b664bbeb9bcb4cf7767c47eaa440f3e53c5cdec3a7608b8d08d0e10",
    "cross_cats_sorted": [
      "math.MP",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2019-05-18T08:27:54Z",
    "title_canon_sha256": "0c83cc81cd78391eaf62867b2924498c7359c099cdc6b6427ec9276852059b60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.07554",
    "kind": "arxiv",
    "version": 1
  }
}