Pith Number

pith:2ORA7Y7I

pith:2017:2ORA7Y7ICYAIBQR6IOE376ZRU3

not attested not anchored not stored refs pending

K-semistable Fano manifolds with the smallest alpha invariant

Chen Jiang

arxiv:1701.09085 v1 · 2017-01-31 · 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{2ORA7Y7ICYAIBQR6IOE376ZRU3}

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	2026-05-18T00:29:46.448894Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3a20fe3e8160080c23e4389bffb31a6fc9a805865a2bbd7bb4e2617eb46b589

Aliases

arxiv: 1701.09085 · arxiv_version: 1701.09085v1 · doi: 10.48550/arxiv.1701.09085 · pith_short_12: 2ORA7Y7ICYAI · pith_short_16: 2ORA7Y7ICYAIBQR6 · pith_short_8: 2ORA7Y7I

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/2ORA7Y7ICYAIBQR6IOE376ZRU3 \
  | 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: d3a20fe3e8160080c23e4389bffb31a6fc9a805865a2bbd7bb4e2617eb46b589

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b53e4b3a1088aa4a8b1e22ce0d67f5d6427682750b69c66384c5093defe430f4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-01-31T15:16:41Z",
    "title_canon_sha256": "8f44bf580122ad3cdbdd68175cd815769a3b21dbc579c80d575a8a764a021525"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.09085",
    "kind": "arxiv",
    "version": 1
  }
}