Pith Number

pith:2OUPRLR3

pith:2013:2OUPRLR35DTKIBHLQVGQ2KEYBP

not attested not anchored not stored refs pending

Mixed quasi-\'etale quotients with arbitrary singularities

Davide Frapporti, Roberto Pignatelli

arxiv:1302.3717 v2 · 2013-02-15 · 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{2OUPRLR35DTKIBHLQVGQ2KEYBP}

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	2026-05-18T03:06:51.533602Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3a8f8ae3be8e6a404eb854d0d28980bced40f690338d5a3a302ceaafe452d34

Aliases

arxiv: 1302.3717 · arxiv_version: 1302.3717v2 · doi: 10.48550/arxiv.1302.3717 · pith_short_12: 2OUPRLR35DTK · pith_short_16: 2OUPRLR35DTKIBHL · pith_short_8: 2OUPRLR3

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/2OUPRLR35DTKIBHLQVGQ2KEYBP \
  | 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: d3a8f8ae3be8e6a404eb854d0d28980bced40f690338d5a3a302ceaafe452d34

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c82db0dad18ddecd8664a2e7cd92250086fb8c1d80aa4ecb1034c573d48a4606",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-02-15T10:18:45Z",
    "title_canon_sha256": "5bb7ea9a7a38ed6fb6a116e3e5dc8925d16a929e6c3f24a717e3be285df1f17e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.3717",
    "kind": "arxiv",
    "version": 2
  }
}