Pith Number

pith:OEI4MEJP

pith:2000:OEI4MEJPOUPENDJ6UJPY3HJIY2

not attested not anchored not stored refs pending

Extension of 2-forms and symplectic varieties

Yoshinori Namikawa

arxiv:math/0010114 v3 · 2000-10-12 · 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{OEI4MEJPOUPENDJ6UJPY3HJIY2}

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	2026-05-18T01:05:38.198301Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7111c6112f751e468d3ea25f8d9d28c6b7e7c9815c112a4db99246006bfba4fe

Aliases

arxiv: math/0010114 · arxiv_version: math/0010114v3 · doi: 10.48550/arxiv.math/0010114 · pith_short_12: OEI4MEJPOUPE · pith_short_16: OEI4MEJPOUPENDJ6 · pith_short_8: OEI4MEJP

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/OEI4MEJPOUPENDJ6UJPY3HJIY2 \
  | 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: 7111c6112f751e468d3ea25f8d9d28c6b7e7c9815c112a4db99246006bfba4fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee8860faf8d293b7b802b99a66e5d5c59aee28570c32429e64afdf7228fe50bc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.AG",
    "submitted_at": "2000-10-12T05:37:22Z",
    "title_canon_sha256": "f1d3b8cb1569840416c36197a77c1a9f648b6f5572ab5a46657dcb001f698590"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0010114",
    "kind": "arxiv",
    "version": 3
  }
}