Pith Number

pith:LH4QL6ET

pith:2012:LH4QL6ETGDM5MALZPYK5QZDJ2G

not attested not anchored not stored refs pending

Surfaces with involution and Prym constructions

Mingmin Shen

arxiv:1209.5457 v2 · 2012-09-24 · 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{LH4QL6ETGDM5MALZPYK5QZDJ2G}

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.

Cited by

1 paper in Pith

Chow groups of surfaces of lines in cubic fourfolds

Receipt and verification

First computed	2026-05-18T03:29:40.612066Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

59f905f89330d9d601797e15d86469d1848d677facc64c1b2ecf7b0a799ddef8

Aliases

arxiv: 1209.5457 · arxiv_version: 1209.5457v2 · doi: 10.48550/arxiv.1209.5457 · pith_short_12: LH4QL6ETGDM5 · pith_short_16: LH4QL6ETGDM5MALZ · pith_short_8: LH4QL6ET

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/LH4QL6ETGDM5MALZPYK5QZDJ2G \
  | 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: 59f905f89330d9d601797e15d86469d1848d677facc64c1b2ecf7b0a799ddef8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3dec68d450559058bb2b17bb6d6cea4f952af60a235d273e9cdae2b620541bf2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-09-24T23:49:08Z",
    "title_canon_sha256": "9a611c7a6d6f4c4f908052d7a81bbe84d91777952c7830fc884da9773cb0efd5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.5457",
    "kind": "arxiv",
    "version": 2
  }
}