Pith Number

pith:RYUWGFYB

pith:2019:RYUWGFYBJ7EE73D5HSMZSU7ZAA

not attested not anchored not stored refs pending

Moduli of noncommutative Hirzebruch surfaces

Izuru Mori, Kazushi Ueda, Shinnosuke Okawa

arxiv:1903.06457 v1 · 2019-03-15 · 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{RYUWGFYBJ7EE73D5HSMZSU7ZAA}

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	2026-05-17T23:51:10.792120Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e296317014fc84fec7d3c999953f9000c6a24cde6abffeed36a23f98088f9ad

Aliases

arxiv: 1903.06457 · arxiv_version: 1903.06457v1 · doi: 10.48550/arxiv.1903.06457 · pith_short_12: RYUWGFYBJ7EE · pith_short_16: RYUWGFYBJ7EE73D5 · pith_short_8: RYUWGFYB

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/RYUWGFYBJ7EE73D5HSMZSU7ZAA \
  | 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: 8e296317014fc84fec7d3c999953f9000c6a24cde6abffeed36a23f98088f9ad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98fb2c0232984576ba8f5d746a7363ccb57afb32f4745e5932f289cbd9eaddb4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-03-15T11:03:10Z",
    "title_canon_sha256": "7bed731b39452b36ffecda57e417e51424a62b6cd2e7ec852b3ce6323d59ef58"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.06457",
    "kind": "arxiv",
    "version": 1
  }
}