Pith Number

pith:4A3HOTME

pith:2012:4A3HOTMESG3FX64ELMWVIMPSKE

not attested not anchored not stored refs pending

The Cayley-Oguiso automorphism of positive entropy on a K3 surface

Alice Garbagnati, Bert van Geemen, Dino Festi, Ronald van Luijk

arxiv:1208.1016 v2 · 2012-08-05 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4A3HOTMESG3FX64ELMWVIMPSKE}

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	2026-05-18T03:38:45.993868Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e036774d8491b65bfb845b2d5431f2512c0f583f24a697de0fedcb375a125fb4

Aliases

arxiv: 1208.1016 · arxiv_version: 1208.1016v2 · doi: 10.48550/arxiv.1208.1016 · pith_short_12: 4A3HOTMESG3F · pith_short_16: 4A3HOTMESG3FX64E · pith_short_8: 4A3HOTME

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/4A3HOTMESG3FX64ELMWVIMPSKE \
  | 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: e036774d8491b65bfb845b2d5431f2512c0f583f24a697de0fedcb375a125fb4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22c9f84828f713c2fc8c441285065612e9a2cf05a71c1b880525b407645eaeaa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-08-05T14:38:18Z",
    "title_canon_sha256": "7ebac8f04a3744586d7786ee524b30958cb5365fd458b8b8d8923aed4ccc87c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.1016",
    "kind": "arxiv",
    "version": 2
  }
}