Pith. sign in
Pith Number

pith:ZCK6LMDM

pith:1997:ZCK6LMDMQ2BPABNEOPY3GDZRBZ
not attested not anchored not stored refs pending

Black holes with unusual topology

L. Vanzo

arxiv:gr-qc/9705004 v3 · 1997-05-05 · gr-qc

Add to your LaTeX paper
\usepackage{pith}
\pithnumber{ZCK6LMDMQ2BPABNEOPY3GDZRBZ}

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

3 papers in Pith

Receipt and verification
First computed 2026-07-04T16:04:37.443354Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

c895e5b06c8682f005a473f1b30f310e52347819a0fe17822af199dad1150a2d

Aliases

arxiv: gr-qc/9705004 · arxiv_version: gr-qc/9705004v3 · doi: 10.48550/arxiv.gr-qc/9705004 · pith_short_12: ZCK6LMDMQ2BP · pith_short_16: ZCK6LMDMQ2BPABNE · pith_short_8: ZCK6LMDM
Agent API
Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/ZCK6LMDMQ2BPABNEOPY3GDZRBZ \
  | 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: c895e5b06c8682f005a473f1b30f310e52347819a0fe17822af199dad1150a2d
Canonical record JSON
{
  "metadata": {
    "abstract_canon_sha256": "021b94d70bbe289cc4b1a554453ad5bdea326f9e5a7954f4b091701a54282681",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1997-05-05T12:47:33Z",
    "title_canon_sha256": "50942147b695e6dce2fe7f32b905253634e03d06e8b851b5a97e0e29fb9a5ae0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9705004",
    "kind": "arxiv",
    "version": 3
  }
}