Pith Number

pith:ABIPS4ZB

pith:2026:ABIPS4ZBNQC5N6EQ3C6TFNO5NU

not attested not anchored not stored refs pending

Non--tautological cycles on Prym moduli spaces

Bogdan Carasca, Riccardo Redigolo

arxiv:2605.21675 v1 · 2026-05-20 · 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{ABIPS4ZBNQC5N6EQ3C6TFNO5NU}

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	2026-05-22T01:03:27.649223Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0050f973216c05d6f890d8bd32b5dd6d346aa52e126f29fc579f9b4e19cb3320

Aliases

arxiv: 2605.21675 · arxiv_version: 2605.21675v1 · doi: 10.48550/arxiv.2605.21675 · pith_short_12: ABIPS4ZBNQC5 · pith_short_16: ABIPS4ZBNQC5N6EQ · pith_short_8: ABIPS4ZB

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/ABIPS4ZBNQC5N6EQ3C6TFNO5NU \
  | 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: 0050f973216c05d6f890d8bd32b5dd6d346aa52e126f29fc579f9b4e19cb3320

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "540e8a6ead49c89df3538e9f119fbe3ca7a69f153de1311e1a888149892f86bc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2026-05-20T19:35:08Z",
    "title_canon_sha256": "c9407cc25295cff2efb2c37d7dbccd84c7b2b76d615487c22ba74480b9fe8225"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.21675",
    "kind": "arxiv",
    "version": 1
  }
}