Pith Number

pith:OPRM6CTG

pith:2018:OPRM6CTGLTU5KUCAZW2VEPCECB

not attested not anchored not stored refs pending

Singularities of a surface given by Kenmotsu-type formula in Euclidean three-space

Keisuke Teramoto, Kentaro Saji, Luciana F. Martins

arxiv:1804.01671 v2 · 2018-04-05 · 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{OPRM6CTGLTU5KUCAZW2VEPCECB}

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	2026-05-17T23:49:05.868626Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73e2cf0a665ce9d55040cdb5523c441044e1f4a5773a05ffedd1a2c440ddea9c

Aliases

arxiv: 1804.01671 · arxiv_version: 1804.01671v2 · doi: 10.48550/arxiv.1804.01671 · pith_short_12: OPRM6CTGLTU5 · pith_short_16: OPRM6CTGLTU5KUCA · pith_short_8: OPRM6CTG

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/OPRM6CTGLTU5KUCAZW2VEPCECB \
  | 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: 73e2cf0a665ce9d55040cdb5523c441044e1f4a5773a05ffedd1a2c440ddea9c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "084e10761689a2258f2b01decd99d7c855aef428cd333a627ade07b130b10699",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-04-05T05:04:02Z",
    "title_canon_sha256": "f86543d8b83ec38894920e141605a6bb3540f224989f578210d516cdadf923e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.01671",
    "kind": "arxiv",
    "version": 2
  }
}