Pith Number

pith:ETYKCG6B

pith:2026:ETYKCG6BPNN6TZD7MRC7IV7XLY

not attested not anchored not stored refs pending

On the Feyzbakhsh-Thomas programme for Fano $3$-folds

Ivan Karpov, Miguel Moreira

arxiv:2607.13982 v1 · 2026-07-15 · 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{ETYKCG6BPNN6TZD7MRC7IV7XLY}

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	2026-07-16T01:23:17.869704Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24f0a11bc17b5be9e47f6445f457f75e22aaca9c08438be565ab5db6a9fbbad9

Aliases

arxiv: 2607.13982 · arxiv_version: 2607.13982v1 · doi: 10.48550/arxiv.2607.13982 · pith_short_12: ETYKCG6BPNN6 · pith_short_16: ETYKCG6BPNN6TZD7 · pith_short_8: ETYKCG6B

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/ETYKCG6BPNN6TZD7MRC7IV7XLY \
  | 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: 24f0a11bc17b5be9e47f6445f457f75e22aaca9c08438be565ab5db6a9fbbad9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d830e0f51ac309575606e74b26555f9947d1714de934ffaecb3c77c3e2829be4",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2026-07-15T16:09:04Z",
    "title_canon_sha256": "e677ab065bcf44342298692c35d2544976693b82831759f527cb68533383c924"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.13982",
    "kind": "arxiv",
    "version": 1
  }
}