Pith Number

pith:IGWZABXW

pith:2008:IGWZABXWTFW3G43E5HTNHOSV2U

not attested not anchored not stored refs pending

The Procesi-Schacher conjecture and Hilbert's 17th problem for algebras with involution

Igor Klep, Thomas Unger

arxiv:0810.5254 v2 · 2008-10-29 · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IGWZABXWTFW3G43E5HTNHOSV2U}

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	2026-05-18T04:03:07.621426Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

41ad9006f6996db37364e9e6d3ba55d5038ba1ef42381f8a006a9ec106f333d6

Aliases

arxiv: 0810.5254 · arxiv_version: 0810.5254v2 · doi: 10.48550/arxiv.0810.5254 · pith_short_12: IGWZABXWTFW3 · pith_short_16: IGWZABXWTFW3G43E · pith_short_8: IGWZABXW

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/IGWZABXWTFW3G43E5HTNHOSV2U \
  | 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: 41ad9006f6996db37364e9e6d3ba55d5038ba1ef42381f8a006a9ec106f333d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "923b983243fcd946a918230d89056de42e7127e77704ac0aec85bf9b6d7026bd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2008-10-29T18:22:47Z",
    "title_canon_sha256": "93f31fe0384c3fd5a84792ce3c32756106f3de080734424b388e8348131e01b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.5254",
    "kind": "arxiv",
    "version": 2
  }
}