Pith Number

pith:EFDG2UY4

pith:2024:EFDG2UY4ADIK3HJISQJ6W64N2Y

not attested not anchored not stored refs pending

Obstructions to semiorthogonal decompositions for singular projective varieties II: Representation theory

Carlo Klapproth, Martin Kalck, Nebojsa Pavic

arxiv:2404.07816 v2 · 2024-04-11 · math.AG · math.AC · 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{EFDG2UY4ADIK3HJISQJ6W64N2Y}

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	2026-07-05T08:33:38.962365Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21466d531c00d0ad9d289413eb7b8dd610f5db1d2961df6f10d285cf66147f18

Aliases

arxiv: 2404.07816 · arxiv_version: 2404.07816v2 · doi: 10.48550/arxiv.2404.07816 · pith_short_12: EFDG2UY4ADIK · pith_short_16: EFDG2UY4ADIK3HJI · pith_short_8: EFDG2UY4

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/EFDG2UY4ADIK3HJISQJ6W64N2Y \
  | 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: 21466d531c00d0ad9d289413eb7b8dd610f5db1d2961df6f10d285cf66147f18

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d51c138b5a3faff7dbdbda0cc5c8de8300b3ed05ae8a5f48915f8c5a5da0a9da",
    "cross_cats_sorted": [
      "math.AC",
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2024-04-11T14:58:55Z",
    "title_canon_sha256": "4930d5c62c9be83e7c11e672a7cdb4e982af5f8466194e4e140dce655bf253db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2404.07816",
    "kind": "arxiv",
    "version": 2
  }
}