Pith Number

pith:6BMPOU2K

pith:2011:6BMPOU2KUBYMNNC2QPF7YWEOQM

not attested not anchored not stored refs pending

Rationality of the moduli spaces of 2-elementary K3 surfaces

Shouhei Ma

arxiv:1110.5110 v2 · 2011-10-24 · 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{6BMPOU2KUBYMNNC2QPF7YWEOQM}

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	2026-05-18T03:45:40.166169Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f058f7534aa070c6b45a83cbfc588e83238a705dc19b03cc64c5b083a3464cbd

Aliases

arxiv: 1110.5110 · arxiv_version: 1110.5110v2 · doi: 10.48550/arxiv.1110.5110 · pith_short_12: 6BMPOU2KUBYM · pith_short_16: 6BMPOU2KUBYMNNC2 · pith_short_8: 6BMPOU2K

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/6BMPOU2KUBYMNNC2QPF7YWEOQM \
  | 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: f058f7534aa070c6b45a83cbfc588e83238a705dc19b03cc64c5b083a3464cbd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "371f738e2749eda07b664e23f29a788e520cd7f6668a60b1fdc6fe8832e47027",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-10-24T01:38:51Z",
    "title_canon_sha256": "d69b749527920466943b226a2c23ca8fc7810218cc06922697a7e620892dd678"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.5110",
    "kind": "arxiv",
    "version": 2
  }
}