Pith Number

pith:Y63PYKFV

pith:2018:Y63PYKFVSDYYF7XTIA2RBMB4TM

not attested not anchored not stored refs pending

An example of birationally inequivalent projective symplectic varieties which are D-equivalent and L-equivalent

Shinnosuke Okawa

arxiv:1801.09385 v2 · 2018-01-29 · 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{Y63PYKFVSDYYF7XTIA2RBMB4TM}

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	2026-05-18T00:24:33.182873Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c7b6fc28b590f182fef3403510b03c9b195c44063f9568343286d9c933d8aed9

Aliases

arxiv: 1801.09385 · arxiv_version: 1801.09385v2 · doi: 10.48550/arxiv.1801.09385 · pith_short_12: Y63PYKFVSDYY · pith_short_16: Y63PYKFVSDYYF7XT · pith_short_8: Y63PYKFV

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/Y63PYKFVSDYYF7XTIA2RBMB4TM \
  | 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: c7b6fc28b590f182fef3403510b03c9b195c44063f9568343286d9c933d8aed9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08aac3831d8dc813d301a817b4f9cd4d1a73414505fe14c120fb93d2db305ba9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-01-29T07:54:50Z",
    "title_canon_sha256": "562e2be24ab8e076f3b588cdff687e6b7920fc71f7b441efcddaeb59b5f7a998"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.09385",
    "kind": "arxiv",
    "version": 2
  }
}