Pith Number

pith:OBY6MIJ3

pith:2009:OBY6MIJ37P34FHJEEFX5TH4ROS

not attested not anchored not stored refs pending

Kadath: a spectral solver for theoretical physics

Philippe Grandclement (LUTH)

arxiv:0909.1228 v2 · 2009-09-07 · gr-qc · hep-th · physics.comp-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{OBY6MIJ37P34FHJEEFX5TH4ROS}

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	2026-05-18T02:44:07.327460Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7071e6213bfbf7c29d24216fd99f91749a2d15ecbf0ab61243ebd7ecbe51ac29

Aliases

arxiv: 0909.1228 · arxiv_version: 0909.1228v2 · doi: 10.48550/arxiv.0909.1228 · pith_short_12: OBY6MIJ37P34 · pith_short_16: OBY6MIJ37P34FHJE · pith_short_8: OBY6MIJ3

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/OBY6MIJ37P34FHJEEFX5TH4ROS \
  | 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: 7071e6213bfbf7c29d24216fd99f91749a2d15ecbf0ab61243ebd7ecbe51ac29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "682d2ec7496915b9db68af9c0b685b25f2bf0b03f130db516eaad45826711b46",
    "cross_cats_sorted": [
      "hep-th",
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-09-07T11:58:07Z",
    "title_canon_sha256": "715ca5e75e148d429f5e69df63c0511fd9826ab5a742c8c599db4459f73134e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.1228",
    "kind": "arxiv",
    "version": 2
  }
}