Pith Number

pith:FLBVGXF3

pith:2018:FLBVGXF3CZ3AWIBXUWPADB4BKU

not attested not anchored not stored refs pending

Contactomorphism groups and Legendrian flexibility

Patrick Massot, Sylvain Courte

arxiv:1803.07997 v2 · 2018-03-21 · 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{FLBVGXF3CZ3AWIBXUWPADB4BKU}

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	2026-05-17T23:55:03.556578Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ac3535cbb16760b2037a59e018781552afd5fc577569eb0767e37a327baec56

Aliases

arxiv: 1803.07997 · arxiv_version: 1803.07997v2 · doi: 10.48550/arxiv.1803.07997 · pith_short_12: FLBVGXF3CZ3A · pith_short_16: FLBVGXF3CZ3AWIBX · pith_short_8: FLBVGXF3

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/FLBVGXF3CZ3AWIBXUWPADB4BKU \
  | 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: 2ac3535cbb16760b2037a59e018781552afd5fc577569eb0767e37a327baec56

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60b086f3d35b86bace8be5c3048d0590131e4a5298ccf6254093c86c807ebcce",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2018-03-21T16:31:33Z",
    "title_canon_sha256": "d80526c1647888677992781b3b6720f1223dc9fddbf038dd7ad6d9d948aaa597"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.07997",
    "kind": "arxiv",
    "version": 2
  }
}