Pith Number

pith:CN2SWBD7

pith:2014:CN2SWBD733OXP6YJKBSHJMM7MX

not attested not anchored not stored refs pending

Overtwisted discs in planar open books

Keiko Kawamuro, Tetsuya Ito

arxiv:1401.3039 v3 · 2014-01-14 · math.GT · math.SG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CN2SWBD733OXP6YJKBSHJMM7MX}

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	2026-05-18T02:28:05.459291Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13752b047fdedd77fb09506474b19f65e019962af2a2b64130705f42fec71a05

Aliases

arxiv: 1401.3039 · arxiv_version: 1401.3039v3 · doi: 10.48550/arxiv.1401.3039 · pith_short_12: CN2SWBD733OX · pith_short_16: CN2SWBD733OXP6YJ · pith_short_8: CN2SWBD7

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/CN2SWBD733OXP6YJKBSHJMM7MX \
  | 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: 13752b047fdedd77fb09506474b19f65e019962af2a2b64130705f42fec71a05

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f03bdb1186f2d06849b77816bd248d90940a6c9822c6e12ff7e094e2a20a20e3",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2014-01-14T00:23:14Z",
    "title_canon_sha256": "e96a988ead2073408a29be0d31b8a1323ab56208ba0bd8bc8dd66bd0ce95fe11"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.3039",
    "kind": "arxiv",
    "version": 3
  }
}