Pith Number

pith:QGCD7E3F

pith:2009:QGCD7E3FOVN4JEOLOQGYUICMFT

not attested not anchored not stored refs pending

A new Hamiltonian formalism for singular Lagrangian theories

Education, Nuclear Physics Labs, Rutgers University, Science, Steven Duplij (Center for Mathematics, Theory Group, Ukraine), V. N. Karazin Kharkov National University

arxiv:0909.2695 v3 · 2009-09-14 · math-ph · hep-th · math.MP · quant-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{QGCD7E3FOVN4JEOLOQGYUICMFT}

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	2026-05-18T04:07:40.873691Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81843f9365755bc491cb740d8a204c2cedd00703470ebfdd36b55b70faa4e53f

Aliases

arxiv: 0909.2695 · arxiv_version: 0909.2695v3 · doi: 10.48550/arxiv.0909.2695 · pith_short_12: QGCD7E3FOVN4 · pith_short_16: QGCD7E3FOVN4JEOL · pith_short_8: QGCD7E3F

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/QGCD7E3FOVN4JEOLOQGYUICMFT \
  | 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: 81843f9365755bc491cb740d8a204c2cedd00703470ebfdd36b55b70faa4e53f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "48ab53f85db1001d6811053ea6cf6d0289c9c7606016495fd8dc267edf05f3d4",
    "cross_cats_sorted": [
      "hep-th",
      "math.MP",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2009-09-14T23:37:32Z",
    "title_canon_sha256": "acad8ce4256ccaad02f8aa87eb0c7163fda0ea6629070b91dabb12b13abdb48f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.2695",
    "kind": "arxiv",
    "version": 3
  }
}