Pith Number

pith:W5KTU2YE

pith:2013:W5KTU2YET5EUWTFQDAT6QMZBXR

not attested not anchored not stored refs pending

$C^*$--algebras arising from group actions on the boundary of a triangle building

Guyan Robertson, Tim Steger

arxiv:1302.5920 v1 · 2013-02-24 · 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{W5KTU2YET5EUWTFQDAT6QMZBXR}

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	2026-05-18T03:32:33.288433Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7553a6b049f494b4cb01827e83321bc740de3d692451ce9357a62fd9f8e7ed7

Aliases

arxiv: 1302.5920 · arxiv_version: 1302.5920v1 · doi: 10.48550/arxiv.1302.5920 · pith_short_12: W5KTU2YET5EU · pith_short_16: W5KTU2YET5EUWTFQ · pith_short_8: W5KTU2YE

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/W5KTU2YET5EUWTFQDAT6QMZBXR \
  | 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: b7553a6b049f494b4cb01827e83321bc740de3d692451ce9357a62fd9f8e7ed7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2f003dfe2a5d534f228e027fa3c0de86ebcf735f9c9c80b9acf2e41b5c5f945",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2013-02-24T16:26:32Z",
    "title_canon_sha256": "794a0997d11c79b896ffe6e1bc5a8ba8e15db23121fe541d35857703dcadb2bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.5920",
    "kind": "arxiv",
    "version": 1
  }
}