Pith Number

pith:46U3D5PL

pith:2022:46U3D5PLYC37Q6XCMODDRXVV32

not attested not anchored not stored refs pending

Hyperelliptic curves and Ulrich sheaves on the complete intersection of two quadrics

David Eisenbud, Frank-Olaf Schreyer

arxiv:2212.07227 v7 · 2022-12-14 · 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{46U3D5PLYC37Q6XCMODDRXVV32}

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	2026-05-20T14:03:16.197614Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e7a9b1f5ebc0b7f87ae2638638deb5de916047525036c092f24bbeb3488c8997

Aliases

arxiv: 2212.07227 · arxiv_version: 2212.07227v7 · doi: 10.48550/arxiv.2212.07227 · pith_short_12: 46U3D5PLYC37 · pith_short_16: 46U3D5PLYC37Q6XC · pith_short_8: 46U3D5PL

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/46U3D5PLYC37Q6XCMODDRXVV32 \
  | 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: e7a9b1f5ebc0b7f87ae2638638deb5de916047525036c092f24bbeb3488c8997

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc3d8b07c7b9440c5f61fb7a9529af88323420deb9851ce002f2311e1bc53c4a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2022-12-14T13:58:08Z",
    "title_canon_sha256": "bc12d53e8ac5bdb4cc921927cf687cdab14bb324def593ab652349d4ddd05d6c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2212.07227",
    "kind": "arxiv",
    "version": 7
  }
}