Pith Number

pith:ZJFJVKG5

pith:2007:ZJFJVKG5WXZ5ZTPBHJRV4EGLKR

not attested not anchored not stored refs pending

The moduli space of cubic fourfolds via the period map

Radu Laza

arxiv:0705.0949 v2 · 2007-05-07 · 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{ZJFJVKG5WXZ5ZTPBHJRV4EGLKR}

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	2026-05-18T03:59:49.844519Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca4a9aa8ddb5f3dccde13a635e10cb545add4e2a69971de734a0941641bebecc

Aliases

arxiv: 0705.0949 · arxiv_version: 0705.0949v2 · doi: 10.48550/arxiv.0705.0949 · pith_short_12: ZJFJVKG5WXZ5 · pith_short_16: ZJFJVKG5WXZ5ZTPB · pith_short_8: ZJFJVKG5

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/ZJFJVKG5WXZ5ZTPBHJRV4EGLKR \
  | 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: ca4a9aa8ddb5f3dccde13a635e10cb545add4e2a69971de734a0941641bebecc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6384e2b8d2c028c303b8e0de4a43033747e2e5fceebd9536188cdf20b6175c51",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2007-05-07T17:51:09Z",
    "title_canon_sha256": "92c14dea838c37fbaf24a43d9db1c3aa9f29aecd45424a7472afdc3d9f470019"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0705.0949",
    "kind": "arxiv",
    "version": 2
  }
}