Pith Number

pith:JFDY5ABY

pith:2001:JFDY5ABYDUUNWITCEIDKXL5BK6

not attested not anchored not stored refs pending

Dirichlet Boundary Value Problems of the Ernst Equation

Andreas Kleinw\"achter, Gernot Neugebauer, Marcus Ansorg, Reinhard Meinel

arxiv:gr-qc/0109094 v2 · 2001-09-28 · 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{JFDY5ABYDUUNWITCEIDKXL5BK6}

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	2026-05-18T01:09:08.350259Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

49478e80381d28db22622206abafa157a7fe7b356fef9d83b4e09631457c9da6

Aliases

arxiv: gr-qc/0109094 · arxiv_version: gr-qc/0109094v2 · doi: 10.48550/arxiv.gr-qc/0109094 · pith_short_12: JFDY5ABYDUUN · pith_short_16: JFDY5ABYDUUNWITC · pith_short_8: JFDY5ABY

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/JFDY5ABYDUUNWITCEIDKXL5BK6 \
  | 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: 49478e80381d28db22622206abafa157a7fe7b356fef9d83b4e09631457c9da6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c200a43118835bb5e23b4cfaf409d9a1c1cd9431bf1938fb66bbbb308dc6ded3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2001-09-28T14:19:05Z",
    "title_canon_sha256": "e08768e1f582db4ed2564987359130922c0abc5e845124135db43008678fd955"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0109094",
    "kind": "arxiv",
    "version": 2
  }
}