Pith Number

pith:2INR62Z6

pith:2013:2INR62Z6UEFYPPRSB72LOGARAE

not attested not anchored not stored refs pending

On Brauer groups of double covers of ruled surfaces

Bianca Viray, Brendan Creutz

arxiv:1306.3251 v3 · 2013-06-13 · math.NT · 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{2INR62Z6UEFYPPRSB72LOGARAE}

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	2026-05-18T01:24:11.422928Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d21b1f6b3ea10b87be320ff4b71811013b3197cbd6de080bcfe56897b3e9dc0e

Aliases

arxiv: 1306.3251 · arxiv_version: 1306.3251v3 · doi: 10.48550/arxiv.1306.3251 · pith_short_12: 2INR62Z6UEFY · pith_short_16: 2INR62Z6UEFYPPRS · pith_short_8: 2INR62Z6

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/2INR62Z6UEFYPPRSB72LOGARAE \
  | 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: d21b1f6b3ea10b87be320ff4b71811013b3197cbd6de080bcfe56897b3e9dc0e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f04ffe990c5ff3beeb6d2be82cafcabf07aa5fe4ee29be24f1ed5f83b07a3d91",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2013-06-13T20:30:27Z",
    "title_canon_sha256": "8ee0c4dea2fe72cf00715f2aba20eec9138fe85c49ab87e3fd894346ff6f4d48"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.3251",
    "kind": "arxiv",
    "version": 3
  }
}