Pith Number

pith:MBZ672LU

pith:2016:MBZ672LUZQU2RX546AECYPSQ2M

not attested not anchored not stored refs pending

Isomorphic quartic K3 surfaces in the view of Cremona and projective transformations

Keiji Oguiso

arxiv:1602.04588 v3 · 2016-02-15 · 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{MBZ672LUZQU2RX546AECYPSQ2M}

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	2026-05-18T01:01:08.648430Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6073efe974cc29a8dfbcf0082c3e50d3298d91b65a78f87870e011cc0e28edb5

Aliases

arxiv: 1602.04588 · arxiv_version: 1602.04588v3 · doi: 10.48550/arxiv.1602.04588 · pith_short_12: MBZ672LUZQU2 · pith_short_16: MBZ672LUZQU2RX54 · pith_short_8: MBZ672LU

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/MBZ672LUZQU2RX546AECYPSQ2M \
  | 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: 6073efe974cc29a8dfbcf0082c3e50d3298d91b65a78f87870e011cc0e28edb5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef4edc64ccb80f712e0da53869318c959112abc1ed7f65ecd1205e3eb0c2fdc0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-02-15T08:20:31Z",
    "title_canon_sha256": "35119c063c85c1b858f76e448006ffe77cc8f0e40a8489c19bf9507d9ea0964b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.04588",
    "kind": "arxiv",
    "version": 3
  }
}