Pith Number

pith:EP2OBGAN

pith:2018:EP2OBGANNHSH5HR34IYEVJWNAX

not attested not anchored not stored refs pending

Non-normal purely log terminal centres in characteristic $p \geq 3$

Fabio Bernasconi

arxiv:1802.04896 v1 · 2018-02-13 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EP2OBGANNHSH5HR34IYEVJWNAX}

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	2026-05-18T00:23:22.279991Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23f4e0980d69e47e9e3be2304aa6cd05fdfbd6e34f184a1a6c38948455bde02e

Aliases

arxiv: 1802.04896 · arxiv_version: 1802.04896v1 · doi: 10.48550/arxiv.1802.04896 · pith_short_12: EP2OBGANNHSH · pith_short_16: EP2OBGANNHSH5HR3 · pith_short_8: EP2OBGAN

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/EP2OBGANNHSH5HR34IYEVJWNAX \
  | 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: 23f4e0980d69e47e9e3be2304aa6cd05fdfbd6e34f184a1a6c38948455bde02e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "73b0919350d93a2d8d9cada89d1eca28b36b2dbef596ac3ba38feb1ae5495e86",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-02-13T23:39:52Z",
    "title_canon_sha256": "99375406ce85b02eae74772f010f05be6c1645f2d01534569e1d6330707df4eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.04896",
    "kind": "arxiv",
    "version": 1
  }
}