Pith Number

pith:Z3RU6DMC

pith:2011:Z3RU6DMCZYMK3JNE2XYTRVZ4UX

not attested not anchored not stored refs pending

Weak Fano threefolds obtained by blowing-up a space curve and construction of Sarkisov links

J\'er\'emy Blanc, St\'ephane Lamy

arxiv:1106.3716 v3 · 2011-06-19 · 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{Z3RU6DMCZYMK3JNE2XYTRVZ4UX}

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	2026-05-18T03:30:15.084579Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cee34f0d82ce18ada5a4d5f138d73ca5d4daa5893cca92c51c9d6f68d0ff3ce9

Aliases

arxiv: 1106.3716 · arxiv_version: 1106.3716v3 · doi: 10.48550/arxiv.1106.3716 · pith_short_12: Z3RU6DMCZYMK · pith_short_16: Z3RU6DMCZYMK3JNE · pith_short_8: Z3RU6DMC

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/Z3RU6DMCZYMK3JNE2XYTRVZ4UX \
  | 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: cee34f0d82ce18ada5a4d5f138d73ca5d4daa5893cca92c51c9d6f68d0ff3ce9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1130cf055aa1dc2ca19ddfde60832259a88830449922e7495057a5003eaa9cc3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-06-19T07:52:53Z",
    "title_canon_sha256": "10fbb38ff66d811a61abe4ea6dc2ded3ecb194110f06058df9c17101a80e4bd0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.3716",
    "kind": "arxiv",
    "version": 3
  }
}