Pith Number

pith:KNUETKOK

pith:2013:KNUETKOKZHUI5JHQQHMABU4REQ

not attested not anchored not stored refs pending

The Gauss map of surfaces in ~PSL_2(R)

Benoit Daniel, Isabel Fernandez, Pablo Mira

arxiv:1305.1491 v1 · 2013-05-07 · 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{KNUETKOKZHUI5JHQQHMABU4REQ}

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	2026-05-18T03:26:21.611293Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

536849a9cac9e88ea4f081d800d391243349c15ae2ebf234cda53cbd84942e0d

Aliases

arxiv: 1305.1491 · arxiv_version: 1305.1491v1 · doi: 10.48550/arxiv.1305.1491 · pith_short_12: KNUETKOKZHUI · pith_short_16: KNUETKOKZHUI5JHQ · pith_short_8: KNUETKOK

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/KNUETKOKZHUI5JHQQHMABU4REQ \
  | 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: 536849a9cac9e88ea4f081d800d391243349c15ae2ebf234cda53cbd84942e0d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c0b8198883892d9ba5f50487c002a06dbeec5be66153125da3975442116a773",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-05-07T12:38:19Z",
    "title_canon_sha256": "9e5d7da216b2760f2e1ecf5255c59409866a3f93a7ad560887b3e875080f0252"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.1491",
    "kind": "arxiv",
    "version": 1
  }
}