Pith Number

pith:6XBHJ42S

pith:2013:6XBHJ42SFEZCI5YCI36OXDMDWW

not attested not anchored not stored refs pending

Groupe de Brauer non ramifi\'e alg\'ebrique des espaces homog\`enes (The unramified algebraic Brauer group of homogeneous spaces)

Giancarlo Lucchini Arteche

arxiv:1312.3103 v4 · 2013-12-11 · math.AG · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6XBHJ42SFEZCI5YCI36OXDMDWW}

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	2026-05-18T00:36:04.279584Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5c274f352293224770246fceb8d83b5b6a250bdb37664bf5f251d4f717b4e06

Aliases

arxiv: 1312.3103 · arxiv_version: 1312.3103v4 · doi: 10.48550/arxiv.1312.3103 · pith_short_12: 6XBHJ42SFEZC · pith_short_16: 6XBHJ42SFEZCI5YC · pith_short_8: 6XBHJ42S

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/6XBHJ42SFEZCI5YCI36OXDMDWW \
  | 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: f5c274f352293224770246fceb8d83b5b6a250bdb37664bf5f251d4f717b4e06

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2730f0f7cd106b4ae293d85ddc8afcbbd91fdba86f018b5540fbf8f4a19cd46c",
    "cross_cats_sorted": [
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-12-11T10:07:23Z",
    "title_canon_sha256": "21044e5f79d6c4012f467c7fc5c016eebcfa8ff2fc871440c348bdc4646f30e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.3103",
    "kind": "arxiv",
    "version": 4
  }
}