Pith Number

pith:NUVF7U4F

pith:2026:NUVF7U4FQCHILE6F3DIEG3HCGD

not attested not anchored not stored refs pending

Effective characterization of semi-abelian varieties

Jefferson Baudin, Sofia Tirabassi

arxiv:2607.20296 v1 · 2026-07-22 · 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{NUVF7U4FQCHILE6F3DIEG3HCGD}

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	2026-07-23T01:25:12.896194Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d2a5fd385808e8593c5d8d0436ce230e5d0bcea8151bd52115ef5f2a3b30274

Aliases

arxiv: 2607.20296 · arxiv_version: 2607.20296v1 · doi: 10.48550/arxiv.2607.20296 · pith_short_12: NUVF7U4FQCHI · pith_short_16: NUVF7U4FQCHILE6F · pith_short_8: NUVF7U4F

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/NUVF7U4FQCHILE6F3DIEG3HCGD \
  | 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: 6d2a5fd385808e8593c5d8d0436ce230e5d0bcea8151bd52115ef5f2a3b30274

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86c4721e900cb5a0b7e1f6ba2c19f6c1ce09930a44717702768dd625d5fe07b4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2026-07-22T15:43:43Z",
    "title_canon_sha256": "2b11f09f5cf2d8e74a6d5978cb7641a9a5974c72381b4ee99ee931eacf64cd1f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.20296",
    "kind": "arxiv",
    "version": 1
  }
}