Pith Number

pith:YSOAHL4U

pith:2012:YSOAHL4U6F2ABUERJH65JJMF2P

not attested not anchored not stored refs pending

Unramified Brauer groups of finite and infinite groups

Primoz Moravec

arxiv:1203.3190 v1 · 2012-03-14 · math.GR · 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{YSOAHL4U6F2ABUERJH65JJMF2P}

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	2026-05-18T04:00:03.105436Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c49c03af94f17400d09149fdd4a585d3c192a4b362d2d4c8d505d6d54a29dfb9

Aliases

arxiv: 1203.3190 · arxiv_version: 1203.3190v1 · doi: 10.48550/arxiv.1203.3190 · pith_short_12: YSOAHL4U6F2A · pith_short_16: YSOAHL4U6F2ABUER · pith_short_8: YSOAHL4U

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/YSOAHL4U6F2ABUERJH65JJMF2P \
  | 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: c49c03af94f17400d09149fdd4a585d3c192a4b362d2d4c8d505d6d54a29dfb9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb8ee41849106329a10404c9004971f9d4fb1da053e3c63dc681dee57587b572",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2012-03-14T19:58:10Z",
    "title_canon_sha256": "ff8984f810215b90fd1c2a83548a9817f70c0e51c787fd65c7214ab87a95021d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.3190",
    "kind": "arxiv",
    "version": 1
  }
}