Pith Number

pith:5FER7UWA

pith:2019:5FER7UWAFGCSWOSM6NU3E4Q6HY

not attested not anchored not stored refs pending

Mapping class groups, skein algebras and combinatorial quantization

Matthieu Faitg

arxiv:1910.04110 v1 · 2019-10-09 · math.QA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5FER7UWAFGCSWOSM6NU3E4Q6HY}

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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.

Cited by

1 paper in Pith

Central extensions of mapping class groups of surfaces from stated skein algebras

Receipt and verification

First computed	2026-07-05T00:11:01.468408Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9491fd2c029852b3a4cf369b2721e3e034b2a0f43bdbf7a254c6f64dab9fbce

Aliases

arxiv: 1910.04110 · arxiv_version: 1910.04110v1 · doi: 10.48550/arxiv.1910.04110 · pith_short_12: 5FER7UWAFGCS · pith_short_16: 5FER7UWAFGCSWOSM · pith_short_8: 5FER7UWA

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/5FER7UWAFGCSWOSM6NU3E4Q6HY \
  | 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: e9491fd2c029852b3a4cf369b2721e3e034b2a0f43bdbf7a254c6f64dab9fbce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "778eade831760ac17c750d8ae9f4c8944f4516d61606f430b6181130c138ba40",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.QA",
    "submitted_at": "2019-10-09T16:44:34Z",
    "title_canon_sha256": "bfe7420877b48724b495a19dd095d8f2f6a1d26c441a3b6e5b9449536a018a9b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.04110",
    "kind": "arxiv",
    "version": 1
  }
}