Pith Number

pith:KDQ4B5OG

pith:2009:KDQ4B5OGEUYMWW2S5H7AANNOOP

not attested not anchored not stored refs pending

Existence of complete Kahler Ricci-flat metrics on crepant resolutions

Bianca Santoro

arxiv:0902.0595 v3 · 2009-02-03 · math.DG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KDQ4B5OGEUYMWW2S5H7AANNOOP}

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	2026-05-18T03:55:22.243672Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50e1c0f5c62530cb5b52e9fe0035ae73e05c85aec040a9fa262156d4783042ca

Aliases

arxiv: 0902.0595 · arxiv_version: 0902.0595v3 · doi: 10.48550/arxiv.0902.0595 · pith_short_12: KDQ4B5OGEUYM · pith_short_16: KDQ4B5OGEUYMWW2S · pith_short_8: KDQ4B5OG

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/KDQ4B5OGEUYMWW2S5H7AANNOOP \
  | 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: 50e1c0f5c62530cb5b52e9fe0035ae73e05c85aec040a9fa262156d4783042ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db013c861d2d70984a5057503daf8cfd8bda30104521de81ce5fa026b177fe6e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2009-02-03T20:20:15Z",
    "title_canon_sha256": "f416dfde1ed1df8155052272f3e82528600cead521f60bc7728ee06974adefe2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.0595",
    "kind": "arxiv",
    "version": 3
  }
}