Pith Number

pith:S6DDU2MR

pith:2001:S6DDU2MR6KM6LEO4FV6SUMESXN

not attested not anchored not stored refs pending

Infinitesimal Variation of Harmonic Forms and Lefschetz Decomposition

Daniel Huybrechts

arxiv:math/0102116 v2 · 2001-02-15 · 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{S6DDU2MR6KM6LEO4FV6SUMESXN}

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

The LLV Algebra for Primitive Symplectic Varieties with Isolated Singularities

Receipt and verification

First computed	2026-07-04T14:35:04.904661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97863a6991f299e591dc2d7d2a3092bb4cd0b20ceb9aaaba28c01c29ec6299cf

Aliases

arxiv: math/0102116 · arxiv_version: math/0102116v2 · doi: 10.48550/arxiv.math/0102116 · pith_short_12: S6DDU2MR6KM6 · pith_short_16: S6DDU2MR6KM6LEO4 · pith_short_8: S6DDU2MR

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/S6DDU2MR6KM6LEO4FV6SUMESXN \
  | 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: 97863a6991f299e591dc2d7d2a3092bb4cd0b20ceb9aaaba28c01c29ec6299cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2fbdf0aa588d2b6817dc0ab8e88649f7e96bc1d927f5b53ab7bd959a8829d85",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.AG",
    "submitted_at": "2001-02-15T13:57:32Z",
    "title_canon_sha256": "eee681b120bd4aa10e8cf41c098687df6d31aa6c726d2072ff18023cf6c13fa7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0102116",
    "kind": "arxiv",
    "version": 2
  }
}