Pith Number

pith:6XYIGUCW

pith:2009:6XYIGUCWXAVRYBIDXSP33ELLCF

not attested not anchored not stored refs pending

Riemann Normal Coordinate expansions using Cadabra

Leo Brewin

arxiv:0903.2087 v3 · 2009-03-12 · gr-qc

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6XYIGUCWXAVRYBIDXSP33ELLCF}

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

Semi-classical spacetime thermodynamics

Receipt and verification

First computed	2026-07-05T05:13:02.886324Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5f0835056b82b1c0503bc9fbd916b11475b5fc852276208d810f3d651240e1e

Aliases

arxiv: 0903.2087 · arxiv_version: 0903.2087v3 · doi: 10.48550/arxiv.0903.2087 · pith_short_12: 6XYIGUCWXAVR · pith_short_16: 6XYIGUCWXAVRYBID · pith_short_8: 6XYIGUCW

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/6XYIGUCWXAVRYBIDXSP33ELLCF \
  | 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: f5f0835056b82b1c0503bc9fbd916b11475b5fc852276208d810f3d651240e1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "498838d6d5f1e1eaa2e593db7585ae6ebc061123c3aa7f16c15723b18bced34e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-03-12T01:58:34Z",
    "title_canon_sha256": "fa23f9999b6891915d2cf0f087c443d729921b84a276c602f0316b49aa781dc9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.2087",
    "kind": "arxiv",
    "version": 3
  }
}