Pith Number

pith:HZBDUXAU

pith:1996:HZBDUXAU4L4ZIBDQPUPUECTUVY

not attested not anchored not stored refs pending

Plane curves with a big fundamental group of the complement

G. Dethloff, M. Zaidenberg, S. Orevkov

arxiv:alg-geom/9607006 v2 · 1996-07-04 · alg-geom · 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{HZBDUXAU4L4ZIBDQPUPUECTUVY}

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	2026-05-18T02:32:31.873004Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e423a5c14e2f99404707d1f420a74ae08d0c8531672d3b82ae8f5190709066b

Aliases

arxiv: alg-geom/9607006 · arxiv_version: alg-geom/9607006v2 · doi: 10.48550/arxiv.alg-geom/9607006 · pith_short_12: HZBDUXAU4L4Z · pith_short_16: HZBDUXAU4L4ZIBDQ · pith_short_8: HZBDUXAU

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/HZBDUXAU4L4ZIBDQPUPUECTUVY \
  | 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: 3e423a5c14e2f99404707d1f420a74ae08d0c8531672d3b82ae8f5190709066b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be17407f5fcf85381fa5f21fba1da80162ea2988080787cad936e987b0087f2a",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "alg-geom",
    "submitted_at": "1996-07-04T12:40:41Z",
    "title_canon_sha256": "615ee20bce83dcccf4875686308e1f571aeda9bc0e8e8668bc7348656b921c12"
  },
  "schema_version": "1.0",
  "source": {
    "id": "alg-geom/9607006",
    "kind": "arxiv",
    "version": 2
  }
}