Pith Number

pith:W6XIOJHK

pith:2013:W6XIOJHKNVBTER623PMF53TATC

not attested not anchored not stored refs pending

Black-hole solution without curvature singularity and closed timelike curves

F.R. Klinkhamer

arxiv:1305.2875 v6 · 2013-05-13 · 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{W6XIOJHKNVBTER623PMF53TATC}

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

Complex degenerate metrics in general relativity: a covariant extension of the Moore-Penrose algorithm

Receipt and verification

First computed	2026-05-18T01:50:02.814238Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7ae8724ea6d433247dadbd85eee6098b719a327f76d7fe4d46d7270b4144a02

Aliases

arxiv: 1305.2875 · arxiv_version: 1305.2875v6 · doi: 10.48550/arxiv.1305.2875 · pith_short_12: W6XIOJHKNVBT · pith_short_16: W6XIOJHKNVBTER62 · pith_short_8: W6XIOJHK

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/W6XIOJHKNVBTER623PMF53TATC \
  | 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: b7ae8724ea6d433247dadbd85eee6098b719a327f76d7fe4d46d7270b4144a02

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0de017705c04e16129eb4b32864d275a4ba415b45194bb2dae57b8075343a923",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-05-13T17:58:24Z",
    "title_canon_sha256": "156b8741bb268814029711600dee67c6ac1c0e8ed6af91546175642a662c6791"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.2875",
    "kind": "arxiv",
    "version": 6
  }
}