Pith Number

pith:AI74ALVO

pith:2011:AI74ALVOOR5ETZFE43AI4SIPYI

not attested not anchored not stored refs pending

Effective de Rham Cohomology - The Hypersurface Case

Peter Scheiblechner

arxiv:1112.2489 v3 · 2011-12-12 · math.AG · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AI74ALVOOR5ETZFE43AI4SIPYI}

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	2026-05-18T04:00:15.355585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

023fc02eae747a49e4a4e6c08e490fc20e1553b193d42b38569d628952f6f33a

Aliases

arxiv: 1112.2489 · arxiv_version: 1112.2489v3 · doi: 10.48550/arxiv.1112.2489 · pith_short_12: AI74ALVOOR5E · pith_short_16: AI74ALVOOR5ETZFE · pith_short_8: AI74ALVO

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/AI74ALVOOR5ETZFE43AI4SIPYI \
  | 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: 023fc02eae747a49e4a4e6c08e490fc20e1553b193d42b38569d628952f6f33a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c813306f46159123e9a66458809db00f92700c000fce82d0523edaa2b3f5bc58",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-12-12T09:53:11Z",
    "title_canon_sha256": "4caa25786f2cda20558a0a8e6fabb18205f3ca221931f397194147abfaa43f61"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.2489",
    "kind": "arxiv",
    "version": 3
  }
}