Pith Number

pith:7XFWV43Q

pith:2025:7XFWV43Q4ZZFRDUJ3DO5FZ2D2U

not attested not anchored not stored refs pending

Timelike convergence condition in regular black-hole spacetimes with (anti-)de Sitter core

Johanna Borissova, Matt Visser, Stefano Liberati

arxiv:2509.08590 v1 · 2025-09-10 · 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{7XFWV43Q4ZZFRDUJ3DO5FZ2D2U}

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

4 papers in Pith

Null geodesic defocusing in dynamical black-hole-to-white-hole transitions

Families of regular spacetimes and energy conditions

Energy conditions in static, spherically symmetric spacetimes and effective geometries

Receipt and verification

First computed	2026-07-05T12:08:32.713596Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fdcb6af370e672588e89d8ddd2e743d5308e81a4e311d906fe38c367a88fb18d

Aliases

arxiv: 2509.08590 · arxiv_version: 2509.08590v1 · doi: 10.48550/arxiv.2509.08590 · pith_short_12: 7XFWV43Q4ZZF · pith_short_16: 7XFWV43Q4ZZFRDUJ · pith_short_8: 7XFWV43Q

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/7XFWV43Q4ZZFRDUJ3DO5FZ2D2U \
  | 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: fdcb6af370e672588e89d8ddd2e743d5308e81a4e311d906fe38c367a88fb18d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08b4eb3d4ead7bfe0c50e2caad3ca7f05f2f9592ca90654882032bca9352ac5a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2025-09-10T13:39:34Z",
    "title_canon_sha256": "47c0c0422cd768bf48af427e6ae09c78915bf6f953b7d996b8e07976549d5e93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.08590",
    "kind": "arxiv",
    "version": 1
  }
}