Pith Number

pith:7HUF7WKB

pith:2008:7HUF7WKBA64ERUTYCNEYP6NYEI

not attested not anchored not stored refs pending

Noether-Lefschetz theorem with base locus

John Brevik, Scott Nollet

arxiv:0806.1243 v3 · 2008-06-06 · 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{7HUF7WKBA64ERUTYCNEYP6NYEI}

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	2026-05-18T03:40:26.434464Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9e85fd94107b848d278134987f9b8220f67c199090babccdc6ee59fbfc50a0a

Aliases

arxiv: 0806.1243 · arxiv_version: 0806.1243v3 · doi: 10.48550/arxiv.0806.1243 · pith_short_12: 7HUF7WKBA64E · pith_short_16: 7HUF7WKBA64ERUTY · pith_short_8: 7HUF7WKB

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/7HUF7WKBA64ERUTYCNEYP6NYEI \
  | 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: f9e85fd94107b848d278134987f9b8220f67c199090babccdc6ee59fbfc50a0a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a33edbda8bdd382e304fb6823b5d49efce18d328c53e4e0ee163dd6c6fa459b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2008-06-06T22:21:02Z",
    "title_canon_sha256": "7563c1c10ed129748f2d6c77cfee722eb353855a3a143e3cf8f88239edee7bbe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0806.1243",
    "kind": "arxiv",
    "version": 3
  }
}