Pith Number

pith:SNGQCBNN

pith:2010:SNGQCBNNFI76MDZMQGAI7JYYGF

not attested not anchored not stored refs pending

Rod-structure classification of gravitational instantons with U(1)xU(1) isometry

Edward Teo, Yu Chen

arxiv:1004.2750 v2 · 2010-04-16 · 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{SNGQCBNNFI76MDZMQGAI7JYYGF}

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

New asymptotically flat gravitational instanton

Receipt and verification

First computed	2026-05-18T02:33:34.110065Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

934d0105ad2a3fe60f2c81808fa718314d031a0cda07ef8f460df940d5597ab0

Aliases

arxiv: 1004.2750 · arxiv_version: 1004.2750v2 · doi: 10.48550/arxiv.1004.2750 · pith_short_12: SNGQCBNNFI76 · pith_short_16: SNGQCBNNFI76MDZM · pith_short_8: SNGQCBNN

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/SNGQCBNNFI76MDZMQGAI7JYYGF \
  | 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: 934d0105ad2a3fe60f2c81808fa718314d031a0cda07ef8f460df940d5597ab0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6d2d4da7aa026547ab263c236eef91e35f67fe50a13b5ad353d1752bb9defa1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2010-04-16T03:06:58Z",
    "title_canon_sha256": "13a8727a5bb34103a35423ea03ca44e1bc5d84a59b3eb84c5b33e95a391c234b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.2750",
    "kind": "arxiv",
    "version": 2
  }
}