Pith Number

pith:IQ7V4KFQ

pith:2010:IQ7V4KFQ3RYEMG3RD6L2NAA7XY

not attested not anchored not stored refs pending

Complete Calabi-Yau metrics from P^2 # 9 \bar P^2

Hans-Joachim Hein

arxiv:1003.2646 v3 · 2010-03-12 · 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{IQ7V4KFQ3RYEMG3RD6L2NAA7XY}

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	2026-05-18T02:24:37.550764Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

443f5e28b0dc70461b711f97a6801fbe16387b7d42be0c6361d587ee8e2befff

Aliases

arxiv: 1003.2646 · arxiv_version: 1003.2646v3 · doi: 10.48550/arxiv.1003.2646 · pith_short_12: IQ7V4KFQ3RYE · pith_short_16: IQ7V4KFQ3RYEMG3R · pith_short_8: IQ7V4KFQ

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/IQ7V4KFQ3RYEMG3RD6L2NAA7XY \
  | 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: 443f5e28b0dc70461b711f97a6801fbe16387b7d42be0c6361d587ee8e2befff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee6e54719e997994c5012ba722899c6e2c924c6475d4a1bb470be043af4376c5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2010-03-12T22:06:37Z",
    "title_canon_sha256": "173a7fa6979c0e78e2872987c7d36588c52d85c435b974f23d31d242a7ca5f95"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.2646",
    "kind": "arxiv",
    "version": 3
  }
}