Pith Number

pith:7DOB5GKA

pith:2016:7DOB5GKAYKOWY6YW7VPVP4AOJ5

not attested not anchored not stored refs pending

Elliptic fibrations on K3 surfaces and Salem numbers of maximal degree

Xun Yu

arxiv:1605.09260 v2 · 2016-05-30 · 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{7DOB5GKAYKOWY6YW7VPVP4AOJ5}

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	2026-05-18T01:07:58.023296Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8dc1e9940c29d6c7b16fd5f57f00e4f491bdf961a23050018790995f8fcd15a

Aliases

arxiv: 1605.09260 · arxiv_version: 1605.09260v2 · doi: 10.48550/arxiv.1605.09260 · pith_short_12: 7DOB5GKAYKOW · pith_short_16: 7DOB5GKAYKOWY6YW · pith_short_8: 7DOB5GKA

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/7DOB5GKAYKOWY6YW7VPVP4AOJ5 \
  | 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: f8dc1e9940c29d6c7b16fd5f57f00e4f491bdf961a23050018790995f8fcd15a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d0f6a24b6a533e73e0b23d0ebfc5c257654df7ddccd31261057f1b7ed621494",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-05-30T15:00:15Z",
    "title_canon_sha256": "d2e9e4a4f623b67b33605d378c420b0fe0952df707c527a388d0e14f8fdb49cc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.09260",
    "kind": "arxiv",
    "version": 2
  }
}