Pith Number

pith:DQYCYOUP

pith:1998:DQYCYOUPN3YBNFXGFLKY2O2IVA

not attested not anchored not stored refs pending

Gravitational instantons admit hyper-K\"ahler structure

A. N. Aliev, Y. Nutku

arxiv:gr-qc/9805006 v2 · 1998-05-04 · 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{DQYCYOUPN3YBNFXGFLKY2O2IVA}

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	2026-05-18T01:39:18.593333Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c302c3a8f6ef01696e62ad58d3b48a80d8bf236dbb3f008c7d2a7464b770e3d

Aliases

arxiv: gr-qc/9805006 · arxiv_version: gr-qc/9805006v2 · doi: 10.48550/arxiv.gr-qc/9805006 · pith_short_12: DQYCYOUPN3YB · pith_short_16: DQYCYOUPN3YBNFXG · pith_short_8: DQYCYOUP

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/DQYCYOUPN3YBNFXGFLKY2O2IVA \
  | 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: 1c302c3a8f6ef01696e62ad58d3b48a80d8bf236dbb3f008c7d2a7464b770e3d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15f60278ae7ed7499b7648b2768903fd461131e83bb6a00b7715db1c07c6ecec",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1998-05-04T14:18:51Z",
    "title_canon_sha256": "115d093059740b7dcbcbea755c99052ad2a33dbc9342d717616424cf3c518bb0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9805006",
    "kind": "arxiv",
    "version": 2
  }
}