Pith Number

pith:OEB6V3XO

pith:2026:OEB6V3XOARWSJVHIZK2RCFSNY2

not attested not anchored not stored refs pending

Spinorial Fano manifolds

Alessandro Frassineti, Laurent Manivel

arxiv:2605.28712 v1 · 2026-05-27 · 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{OEB6V3XOARWSJVHIZK2RCFSNY2}

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	2026-05-28T02:05:00.757841Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7103eaeeee046d24d4e8cab511164dc68db7a9a0d1028e30ed65868e50bf8ec5

Aliases

arxiv: 2605.28712 · arxiv_version: 2605.28712v1 · doi: 10.48550/arxiv.2605.28712 · pith_short_12: OEB6V3XOARWS · pith_short_16: OEB6V3XOARWSJVHI · pith_short_8: OEB6V3XO

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/OEB6V3XOARWSJVHIZK2RCFSNY2 \
  | 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: 7103eaeeee046d24d4e8cab511164dc68db7a9a0d1028e30ed65868e50bf8ec5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c1dd0f174e61c3a90c382ee98b77cf23bdded4d7c78d5c9377fd747c0911a4b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2026-05-27T16:35:52Z",
    "title_canon_sha256": "c53b1c7939dd5fcbd99bb2896c05f324f94a836123e41638871675ed2f51e925"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.28712",
    "kind": "arxiv",
    "version": 1
  }
}