Pith Number

pith:6IHS56OR

pith:2001:6IHS56ORJ3AJVB3MC5FSFWCRO6

not attested not anchored not stored refs pending

Ext classes and embeddings for C*-algebras of graphs with sinks

Mark Tomforde

arxiv:math/0103056 v2 · 2001-03-08 · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6IHS56ORJ3AJVB3MC5FSFWCRO6}

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	2026-07-04T14:35:06.684663Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f20f2ef9d14ec09a876c174b22d85177ae064ec13111611f99d03b6089cf5667

Aliases

arxiv: math/0103056 · arxiv_version: math/0103056v2 · doi: 10.48550/arxiv.math/0103056 · pith_short_12: 6IHS56ORJ3AJ · pith_short_16: 6IHS56ORJ3AJVB3M · pith_short_8: 6IHS56OR

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/6IHS56ORJ3AJVB3MC5FSFWCRO6 \
  | 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: f20f2ef9d14ec09a876c174b22d85177ae064ec13111611f99d03b6089cf5667

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41b9fd08fe7d51b0b436ebfdc731d90a6871dab41e618b4ebf27c7be83ee8d51",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.OA",
    "submitted_at": "2001-03-08T05:10:49Z",
    "title_canon_sha256": "d995a562764b577d12d3f3d175960dc3e03d223d2e6925e515918a0aae4b41ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0103056",
    "kind": "arxiv",
    "version": 2
  }
}