Pith Number

pith:4EAZ7QSW

pith:2018:4EAZ7QSWZMH5VEMCFBDVGBGTFV

not attested not anchored not stored refs pending

Hypersurfaces in space forms satisfying some generalized Einstein metric condition

Georges Zafindratafa, Malgorzata Glogowska, Ryszard Deszcz

arxiv:1810.01402 v2 · 2018-10-02 · 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{4EAZ7QSWZMH5VEMCFBDVGBGTFV}

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	2026-05-17T23:52:05.006224Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1019fc256cb0fda918228475304d32d50635fd24f10832d062311b4db3c54fc

Aliases

arxiv: 1810.01402 · arxiv_version: 1810.01402v2 · doi: 10.48550/arxiv.1810.01402 · pith_short_12: 4EAZ7QSWZMH5 · pith_short_16: 4EAZ7QSWZMH5VEMC · pith_short_8: 4EAZ7QSW

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/4EAZ7QSWZMH5VEMCFBDVGBGTFV \
  | 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: e1019fc256cb0fda918228475304d32d50635fd24f10832d062311b4db3c54fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90541d9433a70bf523caf068f7dc5e300f4894f905767c1fbf195ace5967d6a8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-10-02T17:53:01Z",
    "title_canon_sha256": "460773b9d23909f75fbaad7aff9e56edb007095e0565f7752d52c0f57a008ecd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.01402",
    "kind": "arxiv",
    "version": 2
  }
}