Pith Number

pith:JNUB4YQ6

pith:2018:JNUB4YQ6MFQSPXQZRO7ZLGW674

not attested not anchored not stored refs pending

Derived equivalent Hilbert schemes of points on K3 surfaces which are not birational

Ciaran Meachan, Giovanni Mongardi, Kota Yoshioka

arxiv:1802.00281 v3 · 2018-02-01 · 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{JNUB4YQ6MFQSPXQZRO7ZLGW674}

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	2026-07-05T00:05:20.338803Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b681e621e616127de198bbf959adeff12329c2662017062dbb26f7ccc1e23be

Aliases

arxiv: 1802.00281 · arxiv_version: 1802.00281v3 · doi: 10.48550/arxiv.1802.00281 · pith_short_12: JNUB4YQ6MFQS · pith_short_16: JNUB4YQ6MFQSPXQZ · pith_short_8: JNUB4YQ6

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/JNUB4YQ6MFQSPXQZRO7ZLGW674 \
  | 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: 4b681e621e616127de198bbf959adeff12329c2662017062dbb26f7ccc1e23be

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5473ac60a6b09b71551d472414f5c7725606e3647667f3a4094db42fd05f054",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-02-01T13:40:42Z",
    "title_canon_sha256": "0676fb7afd1c757545ed9a1ae3860e553dc4c25d3274e1fb6d1a248c96f7ccb1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.00281",
    "kind": "arxiv",
    "version": 3
  }
}