Pith Number

pith:WEBW672M

pith:2011:WEBW672MYVQDHHZRMM7QXHVV6O

not attested not anchored not stored refs pending

Incompressibility of quadratic Weil transfer of generalized Severi-Brauer varieties

Nikita A. Karpenko

arxiv:1105.1017 v1 · 2011-05-05 · 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{WEBW672MYVQDHHZRMM7QXHVV6O}

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	2026-05-18T04:22:49.437738Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1036f7f4cc560339f31633f0b9eb5f3a6a5f4d22d4b614318b733457d52dc77

Aliases

arxiv: 1105.1017 · arxiv_version: 1105.1017v1 · doi: 10.48550/arxiv.1105.1017 · pith_short_12: WEBW672MYVQD · pith_short_16: WEBW672MYVQDHHZR · pith_short_8: WEBW672M

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/WEBW672MYVQDHHZRMM7QXHVV6O \
  | 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: b1036f7f4cc560339f31633f0b9eb5f3a6a5f4d22d4b614318b733457d52dc77

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ef583a0ea2709c20f75428789c644a5152d9ac45df162afda0b293568da3ef1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-05-05T09:05:19Z",
    "title_canon_sha256": "d1682f35e56e7ad012bb546421e622660cb0355093d709d37297de09d835c413"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.1017",
    "kind": "arxiv",
    "version": 1
  }
}