Pith Number

pith:LJUPRV7G

pith:2017:LJUPRV7GZFSCTIKS4QAZHCJFLW

not attested not anchored not stored refs pending

Null screen isoparametric hypersurfaces in Lorentzian space forms

Didier Solis, Matias Navarro, Oscar Palmas

arxiv:1711.07978 v1 · 2017-11-21 · 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{LJUPRV7GZFSCTIKS4QAZHCJFLW}

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	2026-05-18T00:29:56.022485Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a68f8d7e6c96429a152e4019389255d9260bb1685564af782c8208b33a1cbf7

Aliases

arxiv: 1711.07978 · arxiv_version: 1711.07978v1 · doi: 10.48550/arxiv.1711.07978 · pith_short_12: LJUPRV7GZFSC · pith_short_16: LJUPRV7GZFSCTIKS · pith_short_8: LJUPRV7G

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/LJUPRV7GZFSCTIKS4QAZHCJFLW \
  | 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: 5a68f8d7e6c96429a152e4019389255d9260bb1685564af782c8208b33a1cbf7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca38a0e18cfe16250567280697f99860190e7864c0f3871505ab31eea2b676ee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-11-21T18:58:57Z",
    "title_canon_sha256": "a81fed8c347d6b2621ff9029f5d768b396344df4addc5e20d5e0bf51c966d8a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.07978",
    "kind": "arxiv",
    "version": 1
  }
}