Pith Number

pith:5QWRIOP7

pith:2011:5QWRIOP7ZRFRV2QBPEMOFQUINT

not attested not anchored not stored refs pending

Hamiltonian dynamics and constrained variational calculus: continuous and discrete settings

David Martin de Diego, Fernando Jimenez, Manuel de Leon

arxiv:1108.5570 v2 · 2011-08-29 · math-ph · math.DG · 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{5QWRIOP7ZRFRV2QBPEMOFQUINT}

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	2026-05-18T02:00:45.436073Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec2d1439ffcc4b1aea017918e2c2886ccd9db87dd7f0381c44b3cdb7183e327f

Aliases

arxiv: 1108.5570 · arxiv_version: 1108.5570v2 · doi: 10.48550/arxiv.1108.5570 · pith_short_12: 5QWRIOP7ZRFR · pith_short_16: 5QWRIOP7ZRFRV2QB · pith_short_8: 5QWRIOP7

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/5QWRIOP7ZRFRV2QBPEMOFQUINT \
  | 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: ec2d1439ffcc4b1aea017918e2c2886ccd9db87dd7f0381c44b3cdb7183e327f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d716b2d7b61594de09386d229900688a9a39116db8fc896533fcff6cca43fa10",
    "cross_cats_sorted": [
      "math.DG",
      "math.MP",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2011-08-29T14:28:44Z",
    "title_canon_sha256": "cdf6c9e09c99f428299713f0ae223931a0b6e8780df19610c7b2be9ae623175d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.5570",
    "kind": "arxiv",
    "version": 2
  }
}