Pith Number

pith:4O7NIZL2

pith:2011:4O7NIZL2IMNIDKV4X52CBXFUDM

not attested not anchored not stored refs pending

On Buchsbaum bundles on quadric hypersurfaces

Edoardo Ballico, Francesco Malaspina, Mario Valenzano, Paolo Valabrega

arxiv:1108.0075 v1 · 2011-07-30 · 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{4O7NIZL2IMNIDKV4X52CBXFUDM}

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	2026-05-18T04:16:31.736474Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3bed4657a431a81aabcbf7420dcb41b2360ad187efb4ead823188bbebe74376

Aliases

arxiv: 1108.0075 · arxiv_version: 1108.0075v1 · doi: 10.48550/arxiv.1108.0075 · pith_short_12: 4O7NIZL2IMNI · pith_short_16: 4O7NIZL2IMNIDKV4 · pith_short_8: 4O7NIZL2

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/4O7NIZL2IMNIDKV4X52CBXFUDM \
  | 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: e3bed4657a431a81aabcbf7420dcb41b2360ad187efb4ead823188bbebe74376

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3195e9f8c956a20a1f44d4a3cb662b95b681f516c5e0146d5afd6ab03027d23f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-07-30T15:03:44Z",
    "title_canon_sha256": "848627ba2c8d7717f4ad6253a480ef4a56429f09bcceed1b866ca2c3dab1f859"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.0075",
    "kind": "arxiv",
    "version": 1
  }
}