Pith Number

pith:MCVCQLZS

pith:2012:MCVCQLZSIWHNICZLCW7O77WJD6

not attested not anchored not stored refs pending

On deformations of Q-Fano threefolds

Taro Sano

arxiv:1203.6323 v6 · 2012-03-28 · 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{MCVCQLZSIWHNICZLCW7O77WJD6}

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	2026-05-18T02:39:09.349551Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60aa282f32458ed40b2b15beeffec91fb4de20517d8ac19dbed15c90d6ebf8cd

Aliases

arxiv: 1203.6323 · arxiv_version: 1203.6323v6 · doi: 10.48550/arxiv.1203.6323 · pith_short_12: MCVCQLZSIWHN · pith_short_16: MCVCQLZSIWHNICZL · pith_short_8: MCVCQLZS

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/MCVCQLZSIWHNICZLCW7O77WJD6 \
  | 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: 60aa282f32458ed40b2b15beeffec91fb4de20517d8ac19dbed15c90d6ebf8cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "855c1b34090df78e68290babc22a8dae5746c2a0f80342dba932cd7fb5db1ae2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-03-28T17:46:15Z",
    "title_canon_sha256": "7cbb65e020aac9f126ca1d1bb53a0b369a3cd11035e8a5aa6849e070002d499d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.6323",
    "kind": "arxiv",
    "version": 6
  }
}