Pith Number

pith:ERBI7E4C

pith:2007:ERBI7E4CCQD5UM4O3QV37H3JT7

not attested not anchored not stored refs pending

K_0-theory of n-potents in rings and algebras

Efton Park, Jody Trout

arxiv:0704.0775 v2 · 2007-04-05 · math.KT · 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{ERBI7E4CCQD5UM4O3QV37H3JT7}

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	2026-05-18T00:06:21.253665Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24428f93821407da338edc2bbf9f699fee687b65af86d45f8542f681d58e393c

Aliases

arxiv: 0704.0775 · arxiv_version: 0704.0775v2 · doi: 10.48550/arxiv.0704.0775 · pith_short_12: ERBI7E4CCQD5 · pith_short_16: ERBI7E4CCQD5UM4O · pith_short_8: ERBI7E4C

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/ERBI7E4CCQD5UM4O3QV37H3JT7 \
  | 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: 24428f93821407da338edc2bbf9f699fee687b65af86d45f8542f681d58e393c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f178e26ff8ff9e0cdb6433fc4200becde7591da3200b3908892d277c52ea242",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2007-04-05T18:23:47Z",
    "title_canon_sha256": "72c671e6618c794d4c99c38f65a9550c735d73b4329076e174aa7d514dc2a98d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0704.0775",
    "kind": "arxiv",
    "version": 2
  }
}