Pith Number

pith:ZXH6ZPUX

pith:2018:ZXH6ZPUXWKFBNCBVEBQCI6ZZQO

not attested not anchored not stored refs pending

A novel notion of null infinity for c-boundaries and generalized black holes

I.P. Costa e Silva, J. Herrera, J.L. Flores

arxiv:1807.00152 v2 · 2018-06-30 · gr-qc · math-ph · math.DG · math.MP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZXH6ZPUXWKFBNCBVEBQCI6ZZQO}

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	2026-05-18T00:11:16.977451Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cdcfecbe97b28a1688352060247b39839d3db48856389a038ece4f1851ea9d9f

Aliases

arxiv: 1807.00152 · arxiv_version: 1807.00152v2 · doi: 10.48550/arxiv.1807.00152 · pith_short_12: ZXH6ZPUXWKFB · pith_short_16: ZXH6ZPUXWKFBNCBV · pith_short_8: ZXH6ZPUX

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/ZXH6ZPUXWKFBNCBVEBQCI6ZZQO \
  | 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: cdcfecbe97b28a1688352060247b39839d3db48856389a038ece4f1851ea9d9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f24758c8fd4658c7b6d449e51f435fdd3755b1685c78c458d3191f6861b595a7",
    "cross_cats_sorted": [
      "math-ph",
      "math.DG",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-06-30T11:11:36Z",
    "title_canon_sha256": "be71dc63907c5e195ec5df505e78804d7a0cc1eafdeecdc8bc03d1bfb6ad1b64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.00152",
    "kind": "arxiv",
    "version": 2
  }
}