Pith Number

pith:673JCT2Z

pith:2012:673JCT2Z2QKTQMS4BQLNJWZAYR

not attested not anchored not stored refs pending

Projective models of the supersingular K3 surface with Artin invariant 1 in characteristic 5

Ichiro Shimada

arxiv:1201.4533 v3 · 2012-01-22 · 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{673JCT2Z2QKTQMS4BQLNJWZAYR}

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	2026-05-18T03:04:38.621752Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f7f6914f59d41538325c0c16d4db20c457f3e0d420a3d2ffc1b1038df1b37ea1

Aliases

arxiv: 1201.4533 · arxiv_version: 1201.4533v3 · doi: 10.48550/arxiv.1201.4533 · pith_short_12: 673JCT2Z2QKT · pith_short_16: 673JCT2Z2QKTQMS4 · pith_short_8: 673JCT2Z

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/673JCT2Z2QKTQMS4BQLNJWZAYR \
  | 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: f7f6914f59d41538325c0c16d4db20c457f3e0d420a3d2ffc1b1038df1b37ea1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "94f6850b1ab5875116d825f6a0d311caf5caa014190ebae3996ad66f12197a3a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-01-22T07:01:45Z",
    "title_canon_sha256": "7628906c97320beb201611377d4e05fec0c864c80908a7dc7bec99b4d19677e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.4533",
    "kind": "arxiv",
    "version": 3
  }
}