Pith Number

pith:2H4S45QJ

pith:2018:2H4S45QJT3YYRZFHRZ6PXTKUQJ

not attested not anchored not stored refs pending

Cohomology rings of compactifications of toric arrangements

Corrado De Concini, Giovanni Gaiffi

arxiv:1801.04383 v2 · 2018-01-13 · math.AT · 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{2H4S45QJT3YYRZFHRZ6PXTKUQJ}

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	2026-05-17T23:54:11.644374Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1f92e76099ef188e4a78e7cfbcd54824c312b2429fac94af3079d48526b95ee

Aliases

arxiv: 1801.04383 · arxiv_version: 1801.04383v2 · doi: 10.48550/arxiv.1801.04383 · pith_short_12: 2H4S45QJT3YY · pith_short_16: 2H4S45QJT3YYRZFH · pith_short_8: 2H4S45QJ

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/2H4S45QJT3YYRZFHRZ6PXTKUQJ \
  | 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: d1f92e76099ef188e4a78e7cfbcd54824c312b2429fac94af3079d48526b95ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3692260ba0d365f44f6f0f0e99b8512149e5c7f2f2affc9b8789e8125034ec54",
    "cross_cats_sorted": [
      "math.AG",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2018-01-13T05:27:42Z",
    "title_canon_sha256": "df0bb6d76056e8cba5fa82010fb9d89dad7641ccd8a3cf38259273cfe11e6245"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.04383",
    "kind": "arxiv",
    "version": 2
  }
}