Pith Number

pith:6KBXPA6F

pith:2007:6KBXPA6FDXYUFMWZ5SRJQVZINN

not attested not anchored not stored refs pending

The diffeomorphism group of a K3 surface and Nielsen realization

Jeffrey Giansiracusa

arxiv:0705.4545 v3 · 2007-05-31 · math.GT · math.AT · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6KBXPA6FDXYUFMWZ5SRJQVZINN}

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	2026-05-18T00:30:49.940382Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f2837783c51df142b2d9eca29857286b62db8b247e68083c67aabd97f998f065

Aliases

arxiv: 0705.4545 · arxiv_version: 0705.4545v3 · doi: 10.48550/arxiv.0705.4545 · pith_short_12: 6KBXPA6FDXYU · pith_short_16: 6KBXPA6FDXYUFMWZ · pith_short_8: 6KBXPA6F

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/6KBXPA6FDXYUFMWZ5SRJQVZINN \
  | 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: f2837783c51df142b2d9eca29857286b62db8b247e68083c67aabd97f998f065

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "745b0d076535454ab03f4486e85946da4c25166df63467dab84597d7563277a0",
    "cross_cats_sorted": [
      "math.AT",
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2007-05-31T09:00:50Z",
    "title_canon_sha256": "abdbf24fd3df85cfa4b3b0bf8271130ae41dde075c9b991eba9a14e80e79a2de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0705.4545",
    "kind": "arxiv",
    "version": 3
  }
}