Pith Number

pith:OV6NANSD

pith:2018:OV6NANSDOJ44GWV2KJ3CRHVOHE

not attested not anchored not stored refs pending

Classification of rotational surfaces in Euclidean space satisfying a linear relation between their principal curvatures

\'Alvaro P\'ampano, Rafael L\'opez

arxiv:1808.07566 v1 · 2018-08-22 · 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{OV6NANSDOJ44GWV2KJ3CRHVOHE}

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	2026-05-18T00:07:26.932475Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

757cd036437279c35aba5276289eae3938b5e97dc0f50e8330aff099d81e970a

Aliases

arxiv: 1808.07566 · arxiv_version: 1808.07566v1 · doi: 10.48550/arxiv.1808.07566 · pith_short_12: OV6NANSDOJ44 · pith_short_16: OV6NANSDOJ44GWV2 · pith_short_8: OV6NANSD

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/OV6NANSDOJ44GWV2KJ3CRHVOHE \
  | 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: 757cd036437279c35aba5276289eae3938b5e97dc0f50e8330aff099d81e970a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3885b52dcac5bb2fc6166e61bbc3ab75b244312c3a17a678d9f384c0eb85b19",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-08-22T21:12:40Z",
    "title_canon_sha256": "2e36f172ee69bb928e45a9fac0852e1210d4ca988c9828cfc14e94ec693320fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.07566",
    "kind": "arxiv",
    "version": 1
  }
}