Pith Number

pith:QULNHKJU

pith:2015:QULNHKJUL75SWDZ2MMZCVG5QWD

not attested not anchored not stored refs pending

Non-commutative resolutions of quotient singularities

Michel Van den Bergh, \v{S}pela \v{S}penko

arxiv:1502.05240 v3 · 2015-02-18 · math.AG · math.RT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QULNHKJUL75SWDZ2MMZCVG5QWD}

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	2026-05-18T00:50:43.186372Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8516d3a9345ffb2b0f3a63322a9bb0b0dc0813c6a2521bf62edb4bf43e9049f6

Aliases

arxiv: 1502.05240 · arxiv_version: 1502.05240v3 · doi: 10.48550/arxiv.1502.05240 · pith_short_12: QULNHKJUL75S · pith_short_16: QULNHKJUL75SWDZ2 · pith_short_8: QULNHKJU

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/QULNHKJUL75SWDZ2MMZCVG5QWD \
  | 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: 8516d3a9345ffb2b0f3a63322a9bb0b0dc0813c6a2521bf62edb4bf43e9049f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a1969cafd417bb4f7eb83b441c1cf634c8cdf9f78679293ad0986df86383574",
    "cross_cats_sorted": [
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-02-18T14:19:11Z",
    "title_canon_sha256": "41aa19f437ecc2e32ef71d9de082e3a42be6e9d650c2cb984579a860884004be"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.05240",
    "kind": "arxiv",
    "version": 3
  }
}