Pith Number

pith:X2HAZH6U

pith:2019:X2HAZH6UB2YK45BVI7ECQVFVCN

not attested not anchored not stored refs pending

On Trivial Extensions and Higher Preprojective Algebras

Jin Yun Guo

arxiv:1902.04772 v1 · 2019-02-13 · math.RT · 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{X2HAZH6UB2YK45BVI7ECQVFVCN}

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.

Cited by

1 paper in Pith

Exact Hochschild extensions and deformed Calabi-Yau completions

Receipt and verification

First computed	2026-05-17T23:54:05.991064Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be8e0c9fd40eb0ae743547c82854b5134fdf9fb3784ff8c1a49a6c2eab3abffe

Aliases

arxiv: 1902.04772 · arxiv_version: 1902.04772v1 · doi: 10.48550/arxiv.1902.04772 · pith_short_12: X2HAZH6UB2YK · pith_short_16: X2HAZH6UB2YK45BV · pith_short_8: X2HAZH6U

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/X2HAZH6UB2YK45BVI7ECQVFVCN \
  | 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: be8e0c9fd40eb0ae743547c82854b5134fdf9fb3784ff8c1a49a6c2eab3abffe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "11f3846e3b3f77a2c54ba93c0a0cdc691725259f71497d827bf6aa49a7eb5b33",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RT",
    "submitted_at": "2019-02-13T07:06:53Z",
    "title_canon_sha256": "ee3a709c1efb531d528f0fb8b7cd7bb023f8151f8f1f8c163f6e30a90dac4fc7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.04772",
    "kind": "arxiv",
    "version": 1
  }
}