Pith Number

pith:BREO6KSD

pith:2001:BREO6KSDLRUFH7G3SOO2MUSWET

not attested not anchored not stored refs pending

Curvature invariants in algebraically special spacetimes

J. Bicak, V. Pravda

arxiv:gr-qc/0101085 v1 · 2001-01-20 · 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{BREO6KSDLRUFH7G3SOO2MUSWET}

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	2026-05-18T00:37:16.794912Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c48ef2a435c6853fcdb939da6525624d1d21d37398a176e230b66bb84e11dd0

Aliases

arxiv: gr-qc/0101085 · arxiv_version: gr-qc/0101085v1 · doi: 10.48550/arxiv.gr-qc/0101085 · pith_short_12: BREO6KSDLRUF · pith_short_16: BREO6KSDLRUFH7G3 · pith_short_8: BREO6KSD

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/BREO6KSDLRUFH7G3SOO2MUSWET \
  | 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: 0c48ef2a435c6853fcdb939da6525624d1d21d37398a176e230b66bb84e11dd0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6950069a5bbb5636eac7cdfc4bad950dc06ab3ef2cd20e0e9250ba56a9bee66c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2001-01-20T14:07:28Z",
    "title_canon_sha256": "37774576045f07413d2696a8647642b4c4de99052dc8c4dbaaea2616b2f6417f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0101085",
    "kind": "arxiv",
    "version": 1
  }
}