Pith Number

pith:TACHTS6F

pith:2014:TACHTS6FFWB7KKBZGHSOHIOR7W

not attested not anchored not stored refs pending

Cleft extensions of Koszul twisted Calabi-Yau algebras

Fred van Oystaeyen, Xiaolan Yu, Yinhuo Zhang

arxiv:1405.6040 v2 · 2014-05-23 · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TACHTS6FFWB7KKBZGHSOHIOR7W}

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	2026-05-18T02:30:32.012722Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

980479cbc52d83f5283931e4e3a1d1fdb3a382d5aeb0ef7660b8d0254de9bc69

Aliases

arxiv: 1405.6040 · arxiv_version: 1405.6040v2 · doi: 10.48550/arxiv.1405.6040 · pith_short_12: TACHTS6FFWB7 · pith_short_16: TACHTS6FFWB7KKBZ · pith_short_8: TACHTS6F

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/TACHTS6FFWB7KKBZGHSOHIOR7W \
  | 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: 980479cbc52d83f5283931e4e3a1d1fdb3a382d5aeb0ef7660b8d0254de9bc69

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "adf7fcb622b3fdccc4e1ff23df6d6803e28904178ced13cc4620c5f81a602f00",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2014-05-23T12:35:01Z",
    "title_canon_sha256": "7d4c609d4f9eda88e9f2a067e227a297dd9db9370f3319575eb67ffb892dc382"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.6040",
    "kind": "arxiv",
    "version": 2
  }
}