Pith Number

pith:YQJ3YAZL

pith:2013:YQJ3YAZLVYELFF5JNEGD3KBFM4

not attested not anchored not stored refs pending

Embedding pointed curves in K3 surfaces

Brendan Hassett, Yuri Tschinkel

arxiv:1301.7262 v1 · 2013-01-30 · 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{YQJ3YAZLVYELFF5JNEGD3KBFM4}

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	2026-05-18T03:35:00.802641Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c413bc032bae08b297a9690c3da825672960569c0742d440522131ac4c16762f

Aliases

arxiv: 1301.7262 · arxiv_version: 1301.7262v1 · doi: 10.48550/arxiv.1301.7262 · pith_short_12: YQJ3YAZLVYEL · pith_short_16: YQJ3YAZLVYELFF5J · pith_short_8: YQJ3YAZL

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/YQJ3YAZLVYELFF5JNEGD3KBFM4 \
  | 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: c413bc032bae08b297a9690c3da825672960569c0742d440522131ac4c16762f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e7046094156aeb17e17b1b4300408f033cd683dd69cdff4c3c3f2f7088c447d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-01-30T15:38:58Z",
    "title_canon_sha256": "68c07f37a8f163ca4b10399524f2e142012c85eaa427472ebc66b27e781d8fe0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.7262",
    "kind": "arxiv",
    "version": 1
  }
}