Pith Number

pith:WIED3CVH

pith:2018:WIED3CVH3FWTS22APCEXUUE7X4

not attested not anchored not stored refs pending

Parallel and totally geodesic hypersurfaces of non-reductive homogeneous four-manifolds

Giovanni Calvaruso, Joeri Van der Veken, Reinier Storm

arxiv:1809.06631 v1 · 2018-09-18 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WIED3CVH3FWTS22APCEXUUE7X4}

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	2026-05-18T00:05:25.136164Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2083d8aa7d96d396b4078897a509fbf373813544a1fd17363f71f0553d69781

Aliases

arxiv: 1809.06631 · arxiv_version: 1809.06631v1 · doi: 10.48550/arxiv.1809.06631 · pith_short_12: WIED3CVH3FWT · pith_short_16: WIED3CVH3FWTS22A · pith_short_8: WIED3CVH

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/WIED3CVH3FWTS22APCEXUUE7X4 \
  | 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: b2083d8aa7d96d396b4078897a509fbf373813544a1fd17363f71f0553d69781

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c03b713976470ee9f6455c37e0d9739807519fbc9a6a8344a7646b02ef971bd0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-09-18T10:34:55Z",
    "title_canon_sha256": "8fde8e2a3810df698f2f1c7893ae79d92d1dde1306e7d44b9b63b6b34d6fcbff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.06631",
    "kind": "arxiv",
    "version": 1
  }
}