Pith Number

pith:7UOO3G3Z

pith:2012:7UOO3G3ZMLC2HCJ7POX22LRIJK

not attested not anchored not stored refs pending

On the torsion of Chow groups of Severi-Brauer varieties

Sanghoon Baek

arxiv:1206.2704 v4 · 2012-06-13 · math.AG · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7UOO3G3ZMLC2HCJ7POX22LRIJK}

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	2026-05-18T02:55:18.708782Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd1ced9b7962c5a3893f7bafad2e284a8b72ed68891ee1c4f0cb4afbac41d712

Aliases

arxiv: 1206.2704 · arxiv_version: 1206.2704v4 · doi: 10.48550/arxiv.1206.2704 · pith_short_12: 7UOO3G3ZMLC2 · pith_short_16: 7UOO3G3ZMLC2HCJ7 · pith_short_8: 7UOO3G3Z

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/7UOO3G3ZMLC2HCJ7POX22LRIJK \
  | 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: fd1ced9b7962c5a3893f7bafad2e284a8b72ed68891ee1c4f0cb4afbac41d712

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21b6a9f0e74ff633edf9599316b06b1239b9be8fbd7ab89a1f208d8c63ce4ed7",
    "cross_cats_sorted": [
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-06-13T02:55:29Z",
    "title_canon_sha256": "09aebf83bfef33899187cf875ee3516e35fd45dfbc4c0d5e62883a75d92bf442"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.2704",
    "kind": "arxiv",
    "version": 4
  }
}