Pith Number

pith:3NXDRX7H

pith:2009:3NXDRX7HUYLXTCK2Z5PDOPGLDU

not attested not anchored not stored refs pending

Effective Constraints and Physical Coherent States in Quantum Cosmology: A Numerical Comparison

Artur Tsobanjan, Martin Bojowald

arxiv:0911.4950 v1 · 2009-11-25 · gr-qc · hep-th · 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{3NXDRX7HUYLXTCK2Z5PDOPGLDU}

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	2026-05-18T02:34:03.489469Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db6e38dfe7a61779895acf5e373ccb1d1923ece427bae15ab2e3532992b7df2f

Aliases

arxiv: 0911.4950 · arxiv_version: 0911.4950v1 · doi: 10.48550/arxiv.0911.4950 · pith_short_12: 3NXDRX7HUYLX · pith_short_16: 3NXDRX7HUYLXTCK2 · pith_short_8: 3NXDRX7H

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/3NXDRX7HUYLXTCK2Z5PDOPGLDU \
  | 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: db6e38dfe7a61779895acf5e373ccb1d1923ece427bae15ab2e3532992b7df2f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e741700601c1f0712d5450a5cdc79e3e7cdfe08b07cabcb99e2e44c651031b4",
    "cross_cats_sorted": [
      "hep-th",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-11-25T20:37:21Z",
    "title_canon_sha256": "aa13615b58102f4b3d8476954384aba61d0d1bab6daa8fbd4a03598a0c46e905"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.4950",
    "kind": "arxiv",
    "version": 1
  }
}