Pith Number

pith:2CY2LH4Q

pith:2010:2CY2LH4QZ5FV6GFHNC6EBUER7S

not attested not anchored not stored refs pending

Groupoid symmetry and constraints in general relativity

Alan Weinstein, Christian Blohmann, Marco Cezar Barbosa Fernandes

arxiv:1003.2857 v2 · 2010-03-15 · math.DG · gr-qc · 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{2CY2LH4QZ5FV6GFHNC6EBUER7S}

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.

Cited by

1 paper in Pith

Hamilton Lie algebroids over Dirac structures and sigma models

Receipt and verification

First computed	2026-05-18T02:39:54.562617Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d0b1a59f90cf4b5f18a768bc40d091fcb19ab56e44fdd5af67624fec1e9d655d

Aliases

arxiv: 1003.2857 · arxiv_version: 1003.2857v2 · doi: 10.48550/arxiv.1003.2857 · pith_short_12: 2CY2LH4QZ5FV · pith_short_16: 2CY2LH4QZ5FV6GFH · pith_short_8: 2CY2LH4Q

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/2CY2LH4QZ5FV6GFHNC6EBUER7S \
  | 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: d0b1a59f90cf4b5f18a768bc40d091fcb19ab56e44fdd5af67624fec1e9d655d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3cfeacde59f73eebd05e200d2c32609eaec5aeb9c5b5602c49147233de40424",
    "cross_cats_sorted": [
      "gr-qc",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2010-03-15T07:31:08Z",
    "title_canon_sha256": "dd2d4c8c8518d69e0c333304c0410b443b6d96aadca7e8195fa8c435c43fe221"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.2857",
    "kind": "arxiv",
    "version": 2
  }
}