Pith Number

pith:U7NHQKJ2

pith:2020:U7NHQKJ2FTR7ZXF4JX7F7VLYBI

not attested not anchored not stored refs pending

Numerical relativity in spherical coordinates: A new dynamical spacetime and general relativistic MHD evolution framework for the Einstein Toolkit

Federico Cipolletta, Federico G. Lopez Armengol, Manuela Campanelli, Thomas W. Baumgarte, Vassilios Mewes, Yosef Zlochower, Zachariah B. Etienne

arxiv:2002.06225 v2 · 2020-02-14 · gr-qc · astro-ph.HE · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U7NHQKJ2FTR7ZXF4JX7F7VLYBI}

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

Splitting the Gravitational Atom: Instabilities of Black Holes with Synchronized or Resonant Hair

Receipt and verification

First computed	2026-07-05T01:00:16.414811Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7da78293a2ce3fcdcbc4dfe5fd5780a2db6c8d408af04bd334296b7fd46cf53

Aliases

arxiv: 2002.06225 · arxiv_version: 2002.06225v2 · doi: 10.48550/arxiv.2002.06225 · pith_short_12: U7NHQKJ2FTR7 · pith_short_16: U7NHQKJ2FTR7ZXF4 · pith_short_8: U7NHQKJ2

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/U7NHQKJ2FTR7ZXF4JX7F7VLYBI \
  | 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: a7da78293a2ce3fcdcbc4dfe5fd5780a2db6c8d408af04bd334296b7fd46cf53

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8135aef72403f1de80a503e56394bb1bc43d06e1ff05a38992fe4aa30369af05",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2020-02-14T19:28:53Z",
    "title_canon_sha256": "8008f099a5ffa1a4c20b338b85f19e939163aa2a421259e6a52c02a8bcc52a57"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.06225",
    "kind": "arxiv",
    "version": 2
  }
}