Pith Number

pith:B35GXABK

pith:2018:B35GXABKULVQSUAWMIHXAXE4O2

not attested not anchored not stored refs pending

New characterizations of freeness for hyperplane arrangements

Anna Maria Bigatti, Elisa Palezzato, Michele Torielli

arxiv:1801.09868 v1 · 2018-01-30 · 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{B35GXABKULVQSUAWMIHXAXE4O2}

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	2026-05-18T00:24:46.545345Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0efa6b802aa2eb095016620f705c9c769e3934984e33b521c4ebf6cb54c5e274

Aliases

arxiv: 1801.09868 · arxiv_version: 1801.09868v1 · doi: 10.48550/arxiv.1801.09868 · pith_short_12: B35GXABKULVQ · pith_short_16: B35GXABKULVQSUAW · pith_short_8: B35GXABK

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/B35GXABKULVQSUAWMIHXAXE4O2 \
  | 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: 0efa6b802aa2eb095016620f705c9c769e3934984e33b521c4ebf6cb54c5e274

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f6df67f1be6b51e9ba7078f6d7a760157cb52e80c0bcf02108f180a76bf24ae",
    "cross_cats_sorted": [
      "math.AC",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-01-30T07:02:26Z",
    "title_canon_sha256": "6bc28501abaa6b89176608818930605d068fd29e9ff73b0721b9b70d6a4adbb6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.09868",
    "kind": "arxiv",
    "version": 1
  }
}