Pith Number

pith:U5TGQBKR

pith:2009:U5TGQBKRL754FPFEQJDFLLMNZ5

not attested not anchored not stored refs pending

Moduli spaces and braid monodromy types of bidouble covers of the quadric

Bronislaw Wajnryb (Technical University of Rzeszow), Fabrizio Catanese (Universitaet Bayreuth), Michael L\"onne (Universitaet Goettingen)

arxiv:0910.2142 v2 · 2009-10-12 · math.AG · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U5TGQBKRL754FPFEQJDFLLMNZ5}

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	2026-05-18T02:38:18.766690Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7666805515ffbc2bca4824655ad8dcf6b2cbfad760bb16d159e74e0aceffc87

Aliases

arxiv: 0910.2142 · arxiv_version: 0910.2142v2 · doi: 10.48550/arxiv.0910.2142 · pith_short_12: U5TGQBKRL754 · pith_short_16: U5TGQBKRL754FPFE · pith_short_8: U5TGQBKR

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/U5TGQBKRL754FPFEQJDFLLMNZ5 \
  | 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: a7666805515ffbc2bca4824655ad8dcf6b2cbfad760bb16d159e74e0aceffc87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69039c5b58a97fbf70b59271e9d1e3af92300c84c7640c8aaa8ee6c46441a997",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2009-10-12T17:31:40Z",
    "title_canon_sha256": "fa23368db620ab380e6318c64bcb6e260b7a8d86e38cd8c4c96d25ff743fee7a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.2142",
    "kind": "arxiv",
    "version": 2
  }
}