Pith Number

pith:XOLW6SEF

pith:2005:XOLW6SEF3V73G2GASY4BOQFGK5

not attested not anchored not stored refs pending

On Spacetimes with Constant Scalar Invariants

Alan Coley, Nicos Pelavas, Sigbjorn Hervik

arxiv:gr-qc/0509113 v2 · 2005-09-28 · 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{XOLW6SEF3V73G2GASY4BOQFGK5}

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	2026-05-18T02:37:27.441169Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb976f4885dd7fb368c096381740a6577b1a0583e3abe47bee80409dea71ea79

Aliases

arxiv: gr-qc/0509113 · arxiv_version: gr-qc/0509113v2 · doi: 10.48550/arxiv.gr-qc/0509113 · pith_short_12: XOLW6SEF3V73 · pith_short_16: XOLW6SEF3V73G2GA · pith_short_8: XOLW6SEF

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/XOLW6SEF3V73G2GASY4BOQFGK5 \
  | 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: bb976f4885dd7fb368c096381740a6577b1a0583e3abe47bee80409dea71ea79

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01db574958b0ca3b52fc753c51c8cf069de5b1624c51c10b40e486aed4f3e2fc",
    "cross_cats_sorted": [
      "hep-th",
      "math-ph",
      "math.MP"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2005-09-28T16:44:29Z",
    "title_canon_sha256": "709ee84a8a9b299fe3f157052acfe851c09fc317e64f2338656fbf6b428de7b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0509113",
    "kind": "arxiv",
    "version": 2
  }
}