Pith Number

pith:DG2JDSQY

pith:2000:DG2JDSQYVMNN2LTTVDMXNX5BAY

not attested not anchored not stored refs pending

Fundamental groups of line arrangements: Enumerative aspects

Alexander I. Suciu

arxiv:math/0010105 v2 · 2000-10-11 · 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{DG2JDSQYVMNN2LTTVDMXNX5BAY}

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	2026-05-18T03:04:34.369268Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19b491ca18ab1add2e73a8d976dfa10613a57d686e26a8c798caddc9e2d7fde7

Aliases

arxiv: math/0010105 · arxiv_version: math/0010105v2 · doi: 10.48550/arxiv.math/0010105 · pith_short_12: DG2JDSQYVMNN · pith_short_16: DG2JDSQYVMNN2LTT · pith_short_8: DG2JDSQY

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/DG2JDSQYVMNN2LTTVDMXNX5BAY \
  | 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: 19b491ca18ab1add2e73a8d976dfa10613a57d686e26a8c798caddc9e2d7fde7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9842603ef9d71e921ae48fbdcf48b1f3324db0f3e28c4a779ad25daf1cbd62a0",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "",
    "primary_cat": "math.AG",
    "submitted_at": "2000-10-11T17:05:44Z",
    "title_canon_sha256": "91ecae96f6bd3960a9480b36f4b6a1925b29bcfed63566b0bc0c0724e1363d7e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0010105",
    "kind": "arxiv",
    "version": 2
  }
}