Pith Number

pith:NLIIHER2

pith:2019:NLIIHER2N4O4WH72SFCTDAFU2V

not attested not anchored not stored refs pending

On matrix method for black hole quasinormal modes

Kai Lin, Wei-Liang Qian

arxiv:1902.08352 v2 · 2019-02-22 · 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{NLIIHER2N4O4WH72SFCTDAFU2V}

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	2026-05-17T23:52:31.735322Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ad083923a6f1dcb1ffa91453180b4d55a2cc79cc623443a8d8c870089b21cc8

Aliases

arxiv: 1902.08352 · arxiv_version: 1902.08352v2 · doi: 10.48550/arxiv.1902.08352 · pith_short_12: NLIIHER2N4O4 · pith_short_16: NLIIHER2N4O4WH72 · pith_short_8: NLIIHER2

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/NLIIHER2N4O4WH72SFCTDAFU2V \
  | 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: 6ad083923a6f1dcb1ffa91453180b4d55a2cc79cc623443a8d8c870089b21cc8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a6ec57dc64b387f08d6400774eb2a7c0c7fdb9ae8af18c85a68632e1c517031",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-02-22T03:23:30Z",
    "title_canon_sha256": "3d42ac2f5551438154a59eca5ab9154373c6f6dbe867fd8e9d3132b49d4a5f97"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.08352",
    "kind": "arxiv",
    "version": 2
  }
}