Pith Number

pith:TOWMWWJA

pith:2017:TOWMWWJAPZEYTTNU6LNPXRXT7F

not attested not anchored not stored refs pending

Ordinary K3 surfaces over a finite field

Lenny Taelman

arxiv:1711.09225 v2 · 2017-11-25 · math.AG · math.NT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TOWMWWJAPZEYTTNU6LNPXRXT7F}

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	2026-05-18T00:13:05.035044Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9baccb59207e4989cdb4f2dafbc6f3f94488b7c7a3da78057a5dffa8b5966768

Aliases

arxiv: 1711.09225 · arxiv_version: 1711.09225v2 · doi: 10.48550/arxiv.1711.09225 · pith_short_12: TOWMWWJAPZEY · pith_short_16: TOWMWWJAPZEYTTNU · pith_short_8: TOWMWWJA

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/TOWMWWJAPZEYTTNU6LNPXRXT7F \
  | 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: 9baccb59207e4989cdb4f2dafbc6f3f94488b7c7a3da78057a5dffa8b5966768

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b64cc2d37ec84b202ee5fa57d418ecfd4d5270cd9cb677b38e304b56835d9c66",
    "cross_cats_sorted": [
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-11-25T09:34:30Z",
    "title_canon_sha256": "6255f96dd3798b1f01c5815099f3186db90084b33747738a3937ce4515b1b8e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.09225",
    "kind": "arxiv",
    "version": 2
  }
}