Pith Number

pith:H56223T7

pith:2015:H56223T7N3GTRWXYNQK6ULT56A

not attested not anchored not stored refs pending

An arithmetic Zariski pair of line arrangements with non-isomorphic fundamental group

B. Guerville-Ball\'e, E. Artal, J.I. Cogolludo-Agust\'in, M. Marco-Buzun\'ariz

arxiv:1507.00190 v1 · 2015-07-01 · math.AG · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H56223T7N3GTRWXYNQK6ULT56A}

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	2026-05-18T00:16:56.983440Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f7dad6e7f6ecd38daf86c15ea2e7df030afd378ed1980d8e017c8b47d1472ca

Aliases

arxiv: 1507.00190 · arxiv_version: 1507.00190v1 · doi: 10.48550/arxiv.1507.00190 · pith_short_12: H56223T7N3GT · pith_short_16: H56223T7N3GTRWXY · pith_short_8: H56223T7

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/H56223T7N3GTRWXYNQK6ULT56A \
  | 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: 3f7dad6e7f6ecd38daf86c15ea2e7df030afd378ed1980d8e017c8b47d1472ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "38bd61ecb5e5c68fc29e0c0d053048b9f1c74439ab129c0016273e645ec322db",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-07-01T11:34:30Z",
    "title_canon_sha256": "a3bb48a611cdd792d9550b24df2b7beaeaea375df2f6ab1653b41238e05cd032"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.00190",
    "kind": "arxiv",
    "version": 1
  }
}