Pith Number

pith:5B3ADJBP

pith:2017:5B3ADJBPLY6NLMVLTVWNGKVX2Q

not attested not anchored not stored refs pending

Kerr principal null directions from Bel--Robinson and Kummer surfaces

Alberto Favaro, Jens Boos

arxiv:1703.10791 v1 · 2017-03-31 · 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{5B3ADJBPLY6NLMVLTVWNGKVX2Q}

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	2026-05-18T00:47:32.717454Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e87601a42f5e3cd5b2ab9d6cd32ab7d41cf77afd2be504173db3f3db4b0fef3e

Aliases

arxiv: 1703.10791 · arxiv_version: 1703.10791v1 · doi: 10.48550/arxiv.1703.10791 · pith_short_12: 5B3ADJBPLY6N · pith_short_16: 5B3ADJBPLY6NLMVL · pith_short_8: 5B3ADJBP

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/5B3ADJBPLY6NLMVLTVWNGKVX2Q \
  | 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: e87601a42f5e3cd5b2ab9d6cd32ab7d41cf77afd2be504173db3f3db4b0fef3e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b50b1220893e3fa6fad715ac32ea6cddbe8ac8b950bc399cc269727957c3768e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2017-03-31T08:30:36Z",
    "title_canon_sha256": "447e04ac28a53028869ab68305fcc4a01e06294c795a8e6d443a0151b5fa5a94"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.10791",
    "kind": "arxiv",
    "version": 1
  }
}