Pith Number

pith:DRAAKF7F

pith:2008:DRAAKF7FY5EFT463MW4MTCS2AI

not attested not anchored not stored refs pending

Composition-Diamond lemma for differential algebras

Yongshan Chen, Yu Li, Yuqun Chen

arxiv:0805.2327 v2 · 2008-05-15 · 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{DRAAKF7FY5EFT463MW4MTCS2AI}

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	2026-07-04T17:26:42.342059Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c400517e5c74859f3db65b8c98a5a020d2519a19306de7ef1c9573bd5b5d9d1

Aliases

arxiv: 0805.2327 · arxiv_version: 0805.2327v2 · doi: 10.48550/arxiv.0805.2327 · pith_short_12: DRAAKF7FY5EF · pith_short_16: DRAAKF7FY5EFT463 · pith_short_8: DRAAKF7F

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/DRAAKF7FY5EFT463MW4MTCS2AI \
  | 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: 1c400517e5c74859f3db65b8c98a5a020d2519a19306de7ef1c9573bd5b5d9d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78e0fe7db5cb42ac65d58766ad24a9105bf2e20accf376b6ed35764c8dcacf62",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2008-05-15T14:44:59Z",
    "title_canon_sha256": "d3e3d58c14e962b8a8887a708d62ab5c81ed282e482e83b5642fc813064f594c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0805.2327",
    "kind": "arxiv",
    "version": 2
  }
}