Pith Number

pith:6E6YLWLP

pith:2026:6E6YLWLPYVF4UTWQNWWAXWEBT3

not attested not anchored not stored refs pending

Coble type hypersurfaces and hyperk\"ahler fourfolds

Andr\'es Rojas, \'Angel David R\'ios Ortiz, Benedetta Piroddi, Jieao Song

arxiv:2606.10884 v1 · 2026-06-09 · 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{6E6YLWLPYVF4UTWQNWWAXWEBT3}

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	2026-06-10T01:10:45.664917Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f13d85d96fc54bca4ed06dac0bd8819eee62cbc521fa08157967e424b7cbf142

Aliases

arxiv: 2606.10884 · arxiv_version: 2606.10884v1 · doi: 10.48550/arxiv.2606.10884 · pith_short_12: 6E6YLWLPYVF4 · pith_short_16: 6E6YLWLPYVF4UTWQ · pith_short_8: 6E6YLWLP

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/6E6YLWLPYVF4UTWQNWWAXWEBT3 \
  | 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: f13d85d96fc54bca4ed06dac0bd8819eee62cbc521fa08157967e424b7cbf142

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e88227418e84dcd28769a36d384aaa441f8b94d18922f4109e937c8aebbf528",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2026-06-09T13:57:35Z",
    "title_canon_sha256": "42bd6cbc4bcbef6ec3ec955993e617320e5013b9d3e41072b004de1830ada31e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.10884",
    "kind": "arxiv",
    "version": 1
  }
}