Pith Number

pith:B7NFCI5R

pith:2002:B7NFCI5RTYT7IDL5WJNE5NVZNI

not attested not anchored not stored refs pending

Hamiltonian 2-forms in Kahler geometry, I General Theory

David M. J. Calderbank, Paul Gauduchon, Vestislav Apostolov

arxiv:math/0202280 v2 · 2002-02-26 · math.DG · 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{B7NFCI5RTYT7IDL5WJNE5NVZNI}

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.

Cited by

1 paper in Pith

All toric Kahler surfaces with twistor 2-forms

Receipt and verification

First computed	2026-07-04T14:49:02.650534Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0fda5123b19e27f40d7db25a4eb6b96a361c190997790c5b2833e1ffde74e0dc

Aliases

arxiv: math/0202280 · arxiv_version: math/0202280v2 · doi: 10.48550/arxiv.math/0202280 · pith_short_12: B7NFCI5RTYT7 · pith_short_16: B7NFCI5RTYT7IDL5 · pith_short_8: B7NFCI5R

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/B7NFCI5RTYT7IDL5WJNE5NVZNI \
  | 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: 0fda5123b19e27f40d7db25a4eb6b96a361c190997790c5b2833e1ffde74e0dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "625037496adb09e186a12dd51ae608bdcd8848cb3ae41243c40ad68cab95bc0b",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "math.DG",
    "submitted_at": "2002-02-26T17:36:38Z",
    "title_canon_sha256": "5edf4d07486fa6e825d0b12f40ac3a3d406ba0df66d6d221f4761b34510de864"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0202280",
    "kind": "arxiv",
    "version": 2
  }
}