Pith Number

pith:4AWBLYOP

pith:2011:4AWBLYOPVVLWF7LI5D5GMFXAQV

not attested not anchored not stored refs pending

Even and odd instanton bundles on Fano threefolds of Picard number 1

Daniele Faenzi

arxiv:1109.3858 v2 · 2011-09-18 · 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{4AWBLYOPVVLWF7LI5D5GMFXAQV}

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	2026-05-18T03:28:30.707920Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e02c15e1cfad5762fd68e8fa6616e08550da75e39c47accd69446027bd2eb4e9

Aliases

arxiv: 1109.3858 · arxiv_version: 1109.3858v2 · doi: 10.48550/arxiv.1109.3858 · pith_short_12: 4AWBLYOPVVLW · pith_short_16: 4AWBLYOPVVLWF7LI · pith_short_8: 4AWBLYOP

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/4AWBLYOPVVLWF7LI5D5GMFXAQV \
  | 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: e02c15e1cfad5762fd68e8fa6616e08550da75e39c47accd69446027bd2eb4e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5c948fee03c74786d7ea974dff3ecf16123ddd2b7d520c2eed0cd18b0c70bc3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-09-18T10:32:10Z",
    "title_canon_sha256": "6a6886517bdbddca4c0fb8b3de1f24301bd5d41a4f424f89867abc8f7515b7e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.3858",
    "kind": "arxiv",
    "version": 2
  }
}