Pith Number

pith:FNAPEVWQ

pith:2017:FNAPEVWQN2LMFG23DX5JE7SWRX

not attested not anchored not stored refs pending

Unstable Lazarsfeld-Mukai bundles of rank 2 on a certain K3 surface of Picard number 2

Kenta Watanabe

arxiv:1707.00643 v1 · 2017-06-30 · math.AG · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FNAPEVWQN2LMFG23DX5JE7SWRX}

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	2026-05-18T00:41:02.756593Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b40f256d06e96c29b5b1dfa927e568de04c5c1e46bbd92cb488e1e44a201061

Aliases

arxiv: 1707.00643 · arxiv_version: 1707.00643v1 · doi: 10.48550/arxiv.1707.00643 · pith_short_12: FNAPEVWQN2LM · pith_short_16: FNAPEVWQN2LMFG23 · pith_short_8: FNAPEVWQ

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/FNAPEVWQN2LMFG23DX5JE7SWRX \
  | 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: 2b40f256d06e96c29b5b1dfa927e568de04c5c1e46bbd92cb488e1e44a201061

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5b2fbf3ec32bce8b681690607fb753bf791b38c2627a672c9b904d0a0097a30",
    "cross_cats_sorted": [
      "cs.CG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-06-30T08:23:25Z",
    "title_canon_sha256": "370fbe898d757edb21ca2703bb4fd670d608fbc30eaceae1aafaccba01b62a68"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.00643",
    "kind": "arxiv",
    "version": 1
  }
}