Pith Number

pith:SQXGQ2NX

pith:2019:SQXGQ2NXBJ6ODWRIY65ASVPE7J

not attested not anchored not stored refs pending

Decompositions of derived categories of gerbes and of families of Brauer-Severi varieties

Daniel Bergh, Olaf M. Schn\"urer

arxiv:1901.08945 v2 · 2019-01-25 · 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{SQXGQ2NXBJ6ODWRIY65ASVPE7J}

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	2026-05-17T23:53:41.103910Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

942e6869b70a7ce1da28c7ba0955e4fa7267a2be03131ee5980cd28090f09e14

Aliases

arxiv: 1901.08945 · arxiv_version: 1901.08945v2 · doi: 10.48550/arxiv.1901.08945 · pith_short_12: SQXGQ2NXBJ6O · pith_short_16: SQXGQ2NXBJ6ODWRI · pith_short_8: SQXGQ2NX

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/SQXGQ2NXBJ6ODWRIY65ASVPE7J \
  | 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: 942e6869b70a7ce1da28c7ba0955e4fa7267a2be03131ee5980cd28090f09e14

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f236ab15984840eefab5d8b813f70db9858618eeb91f31f942e6a946d7e7901c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-01-25T16:03:10Z",
    "title_canon_sha256": "6a0ece671fb2da70bd32c3ff38218413295c89ad5ac640d6b0528c61ebfe5228"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.08945",
    "kind": "arxiv",
    "version": 2
  }
}