Pith Number

pith:F2SGKER6

pith:2026:F2SGKER6VLV4IV6L3LORXXJHSB

not attested not anchored not stored refs pending

Hyperk\"ahler sixfolds, abelian fourfolds of Weil type and a Hodge class

Antonio Rapagnetta, Bert van Geemen

arxiv:2607.18341 v1 · 2026-07-20 · 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{F2SGKER6VLV4IV6L3LORXXJHSB}

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	2026-07-22T00:22:42.549631Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ea465123eaaebc457cbdadd1bdd27907faffdfed0bbab3ca07bb770ee47f5cc

Aliases

arxiv: 2607.18341 · arxiv_version: 2607.18341v1 · doi: 10.48550/arxiv.2607.18341 · pith_short_12: F2SGKER6VLV4 · pith_short_16: F2SGKER6VLV4IV6L · pith_short_8: F2SGKER6

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/F2SGKER6VLV4IV6L3LORXXJHSB \
  | 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: 2ea465123eaaebc457cbdadd1bdd27907faffdfed0bbab3ca07bb770ee47f5cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "23af776884ba8ec36127969944dac664718ae3d85aaf435905307206b0c6e8c1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2026-07-20T05:37:41Z",
    "title_canon_sha256": "ab4c2aafcba858471d58a2054fea9ac5e0cd3830ac9f60802882e5b427dd5000"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.18341",
    "kind": "arxiv",
    "version": 1
  }
}