Pith Number

pith:NXRWTDNB

pith:2012:NXRWTDNBEYB6E4U7O7GZZ4IZGS

not attested not anchored not stored refs pending

Simple normal crossing Fano varieties and log Fano manifolds

Kento Fujita

arxiv:1206.1994 v2 · 2012-06-10 · 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{NXRWTDNBEYB6E4U7O7GZZ4IZGS}

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	2026-05-18T02:29:25.422562Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6de3698da12603e2729f77cd9cf119349c41774e1ee9ecd20eb1deaccf2a6d8e

Aliases

arxiv: 1206.1994 · arxiv_version: 1206.1994v2 · doi: 10.48550/arxiv.1206.1994 · pith_short_12: NXRWTDNBEYB6 · pith_short_16: NXRWTDNBEYB6E4U7 · pith_short_8: NXRWTDNB

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/NXRWTDNBEYB6E4U7O7GZZ4IZGS \
  | 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: 6de3698da12603e2729f77cd9cf119349c41774e1ee9ecd20eb1deaccf2a6d8e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad2f38a957df0f350bd15515f9eb242db3bfb2f3394a9f48070cf0239dbf14bf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-06-10T04:10:00Z",
    "title_canon_sha256": "2599ea840655d3bcba878261a0f6daa6119da311540c430aa80f3c0f3585afc4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.1994",
    "kind": "arxiv",
    "version": 2
  }
}