Pith Number

pith:RGDMK2BP

pith:2019:RGDMK2BPNE7JFHW7TNLLGKFW4W

not attested not anchored not stored refs pending

Lagrangian submanifolds of the complex quadric as Gauss maps of hypersurfaces of spheres

Anne Wijffels, Joeri Van der Veken

arxiv:1908.05468 v1 · 2019-08-15 · 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{RGDMK2BPNE7JFHW7TNLLGKFW4W}

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	2026-07-04T23:56:52.605321Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8986c5682f693e929edf9b56b328b6e5be5d97c0f791138b5e7cf4c3e3a55272

Aliases

arxiv: 1908.05468 · arxiv_version: 1908.05468v1 · doi: 10.48550/arxiv.1908.05468 · pith_short_12: RGDMK2BPNE7J · pith_short_16: RGDMK2BPNE7JFHW7 · pith_short_8: RGDMK2BP

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/RGDMK2BPNE7JFHW7TNLLGKFW4W \
  | 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: 8986c5682f693e929edf9b56b328b6e5be5d97c0f791138b5e7cf4c3e3a55272

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e2dac1dc9b5fd1f1457ab026648a333ccd17f194132e37befc17b25406fb273",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2019-08-15T09:42:25Z",
    "title_canon_sha256": "2ad84d8e3d19209c55034f3daf92c16b29c1c2c1c44329091a5decaa2a8b0a3b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.05468",
    "kind": "arxiv",
    "version": 1
  }
}