Pith Number

pith:YJCE74FC

pith:2011:YJCE74FCK2NF25AB2GKL2EPJZL

not attested not anchored not stored refs pending

On Calabi--Yau threefolds associated to a web of quadrics

Slawomir Cynk, Slawomir Rams

arxiv:1106.5426 v1 · 2011-06-27 · 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{YJCE74FCK2NF25AB2GKL2EPJZL}

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	2026-05-18T02:14:18.396802Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c2444ff0a2569a5d7401d194bd11e9cae9305225e4bbf0039b92798096e5fb03

Aliases

arxiv: 1106.5426 · arxiv_version: 1106.5426v1 · doi: 10.48550/arxiv.1106.5426 · pith_short_12: YJCE74FCK2NF · pith_short_16: YJCE74FCK2NF25AB · pith_short_8: YJCE74FC

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/YJCE74FCK2NF25AB2GKL2EPJZL \
  | 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: c2444ff0a2569a5d7401d194bd11e9cae9305225e4bbf0039b92798096e5fb03

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1803e0059ba898683d39f5c8ef4efea63f199c74f6d9125f55ecbba9724cb5ad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-06-27T16:05:40Z",
    "title_canon_sha256": "c347c97985240b44eb39ca890f0c5ea66e5bbd0fdb7eb7f92c44978ec8ca2de3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.5426",
    "kind": "arxiv",
    "version": 1
  }
}