Pith Number

pith:POIMAJKD

pith:2015:POIMAJKD7UH3F5WZ3KHGAFT2HQ

not attested not anchored not stored refs pending

On the dynamical degrees of reflections on cubic fourfolds

Christian B\"ohning, Hans-Christian Graf von Bothmer, Pawel Sosna

arxiv:1502.01144 v1 · 2015-02-04 · math.AG · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{POIMAJKD7UH3F5WZ3KHGAFT2HQ}

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	2026-05-18T00:34:45.173592Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b90c02543fd0fb2f6d9da8e60167a3c360202dbcc670b7005c3cc1b93bddb11

Aliases

arxiv: 1502.01144 · arxiv_version: 1502.01144v1 · doi: 10.48550/arxiv.1502.01144 · pith_short_12: POIMAJKD7UH3 · pith_short_16: POIMAJKD7UH3F5WZ · pith_short_8: POIMAJKD

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/POIMAJKD7UH3F5WZ3KHGAFT2HQ \
  | 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: 7b90c02543fd0fb2f6d9da8e60167a3c360202dbcc670b7005c3cc1b93bddb11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0cc806fbc3dafae29719270aac249d71f97b7f6c0f1033cbcab9b906e22b9e29",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-02-04T10:12:50Z",
    "title_canon_sha256": "0d07bc18896e243557c825285ac84d24d0f647c5e97dad63d811d4526af36257"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.01144",
    "kind": "arxiv",
    "version": 1
  }
}