Pith Number

pith:QOLQBBVB

pith:2015:QOLQBBVBLB52NERGWHGNBJGMUU

not attested not anchored not stored refs pending

Quotients of cubic surfaces

Andrey Trepalin

arxiv:1506.05138 v1 · 2015-06-16 · 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{QOLQBBVBLB52NERGWHGNBJGMUU}

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	2026-05-18T01:46:12.995629Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83970086a1587ba69226b1ccd0a4cca50878ea7b9999428192f3490ac96d3e02

Aliases

arxiv: 1506.05138 · arxiv_version: 1506.05138v1 · doi: 10.48550/arxiv.1506.05138 · pith_short_12: QOLQBBVBLB52 · pith_short_16: QOLQBBVBLB52NERG · pith_short_8: QOLQBBVB

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/QOLQBBVBLB52NERGWHGNBJGMUU \
  | 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: 83970086a1587ba69226b1ccd0a4cca50878ea7b9999428192f3490ac96d3e02

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "565ed53127db3d4d22558cd39862e5a4502c79b308c24194171494ee0b4d43d8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-06-16T20:20:31Z",
    "title_canon_sha256": "ab9c4a688541728afb65b21582eb9ebeda488dc436a48e71ce28d9a3f07f47fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.05138",
    "kind": "arxiv",
    "version": 1
  }
}