Pith Number

pith:FTC7P2JT

pith:2008:FTC7P2JTT4RHHQ4UINSTVSAXTO

not attested not anchored not stored refs pending

Classification of spacetimes according to conformal Killing vectors

K. Saifullah

arxiv:0810.3202 v1 · 2008-10-17 · 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{FTC7P2JTT4RHHQ4UINSTVSAXTO}

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	2026-05-18T00:59:32.824054Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2cc5f7e9339f2273c39443653ac8179b8f741dc8d2faad09337bfdf7badec820

Aliases

arxiv: 0810.3202 · arxiv_version: 0810.3202v1 · doi: 10.48550/arxiv.0810.3202 · pith_short_12: FTC7P2JTT4RH · pith_short_16: FTC7P2JTT4RHHQ4U · pith_short_8: FTC7P2JT

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/FTC7P2JTT4RHHQ4UINSTVSAXTO \
  | 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: 2cc5f7e9339f2273c39443653ac8179b8f741dc8d2faad09337bfdf7badec820

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1be1c20518a028b29e37be04cf737ce09c5844834fe7733185e04259141f9b2f",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2008-10-17T17:25:51Z",
    "title_canon_sha256": "c6a232238f52898f1a14e853eeadbb081fd23f023e25830bfeb361e51e390b77"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.3202",
    "kind": "arxiv",
    "version": 1
  }
}