Pith Number

pith:RRFDRGVA

pith:2024:RRFDRGVANEBLYU5NKIQ7PGQ23L

not attested not anchored not stored refs pending

Exotic Dehn twists and homotopy coherent group actions

Junghwan Park, Masaki Taniguchi, Sungkyung Kang

arxiv:2409.11806 v2 · 2024-09-18 · 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{RRFDRGVANEBLYU5NKIQ7PGQ23L}

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.

Cited by

1 paper in Pith

Irreducible 4-manifolds can admit exotic diffeomorphisms

Receipt and verification

First computed	2026-07-05T09:12:09.625066Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c4a389aa06902bc53ad5221f79a1adac8b67afb1cecf666734e6825c508bdae

Aliases

arxiv: 2409.11806 · arxiv_version: 2409.11806v2 · doi: 10.48550/arxiv.2409.11806 · pith_short_12: RRFDRGVANEBL · pith_short_16: RRFDRGVANEBLYU5N · pith_short_8: RRFDRGVA

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/RRFDRGVANEBLYU5NKIQ7PGQ23L \
  | 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: 8c4a389aa06902bc53ad5221f79a1adac8b67afb1cecf666734e6825c508bdae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2299a046d03f0c41b6e563c507e5f80321307eba7f96ca163c3fe0a656b880aa",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2024-09-18T08:45:47Z",
    "title_canon_sha256": "9c458f3a888ccc6015402f0d3b0949bae4f2aa6f39365e5f51124a765d7e5fe3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2409.11806",
    "kind": "arxiv",
    "version": 2
  }
}