Pith Number

pith:INNSWGWA

pith:2018:INNSWGWA6S3WBNBH4IMOB5BMLB

not attested not anchored not stored refs pending

Unexpected curves arising from special line arrangements

Alessandro Oneto, Grzegorz Malara, Michela Di Marca

arxiv:1804.02730 v1 · 2018-04-08 · math.AG · math.AC · 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{INNSWGWA6S3WBNBH4IMOB5BMLB}

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	2026-05-17T23:54:41.489263Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

435b2b1ac0f4b760b427e218e0f42c58463cf64d6fe82a6cf499b1208a58287e

Aliases

arxiv: 1804.02730 · arxiv_version: 1804.02730v1 · doi: 10.48550/arxiv.1804.02730 · pith_short_12: INNSWGWA6S3W · pith_short_16: INNSWGWA6S3WBNBH · pith_short_8: INNSWGWA

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/INNSWGWA6S3WBNBH4IMOB5BMLB \
  | 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: 435b2b1ac0f4b760b427e218e0f42c58463cf64d6fe82a6cf499b1208a58287e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "304f5a1e2c64cc3f30ec93bb33ec613f2dc793b5d0124be0d3bc9cd1c64ba30b",
    "cross_cats_sorted": [
      "math.AC",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-04-08T17:51:04Z",
    "title_canon_sha256": "1c4f3c80ecec46a1a383cf211732cee7f8a19dd5f3994996b9411cd7cde99f60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.02730",
    "kind": "arxiv",
    "version": 1
  }
}