Pith Number

pith:CPBOYWUI

pith:2014:CPBOYWUIUACMXLD4VKGK4KHQCG

not attested not anchored not stored refs pending

Two torsion in the Brauer group of a hyperelliptic curve

Bianca Viray, Brendan Creutz

arxiv:1403.2924 v1 · 2014-03-12 · 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{CPBOYWUIUACMXLD4VKGK4KHQCG}

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	2026-05-18T01:24:11.307390Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13c2ec5a88a004cbac7caa8cae28f0118d8b8494a26d0ab83287f3604491c1bd

Aliases

arxiv: 1403.2924 · arxiv_version: 1403.2924v1 · doi: 10.48550/arxiv.1403.2924 · pith_short_12: CPBOYWUIUACM · pith_short_16: CPBOYWUIUACMXLD4 · pith_short_8: CPBOYWUI

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/CPBOYWUIUACMXLD4VKGK4KHQCG \
  | 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: 13c2ec5a88a004cbac7caa8cae28f0118d8b8494a26d0ab83287f3604491c1bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30e04eebda7b0ee176ee7536f3e2aed6991ecdd375725a93b2e1f6aa541ea47e",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2014-03-12T13:24:16Z",
    "title_canon_sha256": "a1e1d63538c78f29df8452e5c39a51af0307b5db8191c9a22a54e0ff12a4c8c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.2924",
    "kind": "arxiv",
    "version": 1
  }
}