Pith Number

pith:EFNR5IMN

pith:2017:EFNR5IMNZHMEDIJMWHMF42Y65W

not attested not anchored not stored refs pending

Complete classification of surfaces with a canonical principal direction in the Minkowski 3-space

Alev Kelleci, Mahmut Erg\"ut, Nurettin Cenk Turgay

arxiv:1704.08924 v1 · 2017-04-20 · 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{EFNR5IMNZHMEDIJMWHMF42Y65W}

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	2026-05-18T00:45:24.969835Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

215b1ea18dc9d841a12cb1d85e6b1eedbd096e2ab3119b7eb6c0a0a6bfbb6c9f

Aliases

arxiv: 1704.08924 · arxiv_version: 1704.08924v1 · doi: 10.48550/arxiv.1704.08924 · pith_short_12: EFNR5IMNZHME · pith_short_16: EFNR5IMNZHMEDIJM · pith_short_8: EFNR5IMN

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/EFNR5IMNZHMEDIJMWHMF42Y65W \
  | 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: 215b1ea18dc9d841a12cb1d85e6b1eedbd096e2ab3119b7eb6c0a0a6bfbb6c9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b06394148d06cd026e44d9ea3a84e6daf0e4f1457656def9d22bbac3fa9a7bb3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-04-20T06:50:20Z",
    "title_canon_sha256": "a8974da62636468798d0ba45cc2d29735363ae85b7c56cd5589a9b6dedd3725e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.08924",
    "kind": "arxiv",
    "version": 1
  }
}