Pith Number

pith:R27DOGGP

pith:2008:R27DOGGPVAY5R3EZLQR64KHKP5

not attested not anchored not stored refs pending

Characteristic varieties and logarithmic differential 1-forms

Alexandru Dimca

arxiv:0805.4377 v3 · 2008-05-28 · math.AG · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R27DOGGPVAY5R3EZLQR64KHKP5}

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	2026-05-17T23:53:20.196470Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ebe3718cfa831d8ec995c23ee28ea7f57678d6cc20d56dd910af6673b02e7c1

Aliases

arxiv: 0805.4377 · arxiv_version: 0805.4377v3 · doi: 10.48550/arxiv.0805.4377 · pith_short_12: R27DOGGPVAY5 · pith_short_16: R27DOGGPVAY5R3EZ · pith_short_8: R27DOGGP

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/R27DOGGPVAY5R3EZLQR64KHKP5 \
  | 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: 8ebe3718cfa831d8ec995c23ee28ea7f57678d6cc20d56dd910af6673b02e7c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c75da53b60e79de4ca084cff5bc8a873ce93904e52989e4950df0eeb783f8af",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2008-05-28T15:50:32Z",
    "title_canon_sha256": "051583e7e045b3d554263887e45a66a78fd4e8b43c745c456b69a1c4e84e9eaf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0805.4377",
    "kind": "arxiv",
    "version": 3
  }
}