Pith Number

pith:5QH6QG7W

pith:2017:5QH6QG7WJN23QGSLP57OCL2DBQ

not attested not anchored not stored refs pending

Normal subgroups of mapping class groups and the metaconjecture of Ivanov

Dan Margalit, Tara Brendle

arxiv:1710.08929 v2 · 2017-10-24 · 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{5QH6QG7WJN23QGSLP57OCL2DBQ}

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	2026-05-18T00:16:23.531851Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec0fe81bf64b75b81a4b7f7ee12f430c1b3d4559920ff4a8e8660b624ab97303

Aliases

arxiv: 1710.08929 · arxiv_version: 1710.08929v2 · doi: 10.48550/arxiv.1710.08929 · pith_short_12: 5QH6QG7WJN23 · pith_short_16: 5QH6QG7WJN23QGSL · pith_short_8: 5QH6QG7W

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/5QH6QG7WJN23QGSLP57OCL2DBQ \
  | 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: ec0fe81bf64b75b81a4b7f7ee12f430c1b3d4559920ff4a8e8660b624ab97303

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e649766f91f4cc38c6e396ee3a30f82705b1bbbaf57f97773e2084f11b9ff64c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2017-10-24T18:00:52Z",
    "title_canon_sha256": "37b7adce6f40d21e3791acec7ad1edeeea34b9d85d12947402d2f47c45cafe82"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.08929",
    "kind": "arxiv",
    "version": 2
  }
}