Pith Number

pith:NJWFMQF4

pith:2007:NJWFMQF4PAE4NVRBOFAHGC2MSI

not attested not anchored not stored refs pending

Projective manifolds containing a large linear subspace with nef normal bundle

Carla Novelli, Gianluca Occhetta

arxiv:0712.3406 v3 · 2007-12-20 · 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{NJWFMQF4PAE4NVRBOFAHGC2MSI}

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	2026-05-18T01:28:06.437792Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a6c5640bc7809c6d6217140730b4c921f93dda8a71036a0f36e2eccfe5fdf20

Aliases

arxiv: 0712.3406 · arxiv_version: 0712.3406v3 · doi: 10.48550/arxiv.0712.3406 · pith_short_12: NJWFMQF4PAE4 · pith_short_16: NJWFMQF4PAE4NVRB · pith_short_8: NJWFMQF4

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/NJWFMQF4PAE4NVRBOFAHGC2MSI \
  | 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: 6a6c5640bc7809c6d6217140730b4c921f93dda8a71036a0f36e2eccfe5fdf20

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cfe4179035aee3349ad47bdc1d6d1dc1439993c963e580c3b2afa53d701952c6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2007-12-20T13:20:07Z",
    "title_canon_sha256": "99bbd1d978cd62c293e1f3144396fe9e67314900b6bb48a7f1036f4c0e9eaadc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0712.3406",
    "kind": "arxiv",
    "version": 3
  }
}