Pith Number

pith:BBMYO2I2

pith:2018:BBMYO2I2GLNLRYJQY34NPL76SC

not attested not anchored not stored refs pending

On the geography of line arrangements

Fernando Figueroa, Giancarlo Urz\'ua, Sebastian Eterovi\'c

arxiv:1805.00990 v2 · 2018-05-02 · math.AG · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BBMYO2I2GLNLRYJQY34NPL76SC}

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	2026-05-17T23:48:22.722550Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

085987691a32dab8e130c6f8d7affe908e8834fc000107f11871a1d9342b2828

Aliases

arxiv: 1805.00990 · arxiv_version: 1805.00990v2 · doi: 10.48550/arxiv.1805.00990 · pith_short_12: BBMYO2I2GLNL · pith_short_16: BBMYO2I2GLNLRYJQ · pith_short_8: BBMYO2I2

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/BBMYO2I2GLNLRYJQY34NPL76SC \
  | 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: 085987691a32dab8e130c6f8d7affe908e8834fc000107f11871a1d9342b2828

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6d93eac35e705547da5c1a9fe88b38bfae12f15f84b6dc29ff4d8d28173fc02",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-05-02T19:28:32Z",
    "title_canon_sha256": "01d32a170c41706d4d79be4aa3e0a1d36ce46d9c506452f343d0a17c0d76cfd1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.00990",
    "kind": "arxiv",
    "version": 2
  }
}