Pith Number

pith:ZQWFTJKP

pith:2017:ZQWFTJKP3FCBD47EU4DCKVSYFT

not attested not anchored not stored refs pending

Examples of non-trivial contact mapping classes for overtwisted contact manifolds in all dimensions

Fabio Gironella

arxiv:1704.07278 v3 · 2017-04-24 · math.SG · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZQWFTJKP3FCBD47EU4DCKVSYFT}

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	2026-05-17T23:45:00.184259Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc2c59a54fd94411f3e4a7062556582cf377f2f0035a0cd3273ef19f8cda79a3

Aliases

arxiv: 1704.07278 · arxiv_version: 1704.07278v3 · doi: 10.48550/arxiv.1704.07278 · pith_short_12: ZQWFTJKP3FCB · pith_short_16: ZQWFTJKP3FCBD47E · pith_short_8: ZQWFTJKP

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/ZQWFTJKP3FCBD47EU4DCKVSYFT \
  | 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: cc2c59a54fd94411f3e4a7062556582cf377f2f0035a0cd3273ef19f8cda79a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b490a7e5f4cbec269da5322741f116f853eafb7ffc6cfe14480632007317bb7f",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2017-04-24T15:18:26Z",
    "title_canon_sha256": "80ce65325dc2827fb8326a483c05d4bf1b754c5f6b2b3cb3f448d0cbc1a3b9ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.07278",
    "kind": "arxiv",
    "version": 3
  }
}