Pith Number

pith:FJSATFJK

pith:2019:FJSATFJKSHQIGH6YH7PGAV6SIZ

not attested not anchored not stored refs pending

The group structure of the homotopy set whose target is the automorphism group of the Cuntz algebra

Masaki Izumi, Taro Sogabe

arxiv:1903.04809 v1 · 2019-03-12 · 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{FJSATFJKSHQIGH6YH7PGAV6SIZ}

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	2026-05-17T23:51:28.660999Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a6409952a91e0831fd83fde6057d246519ed00cfbf04286b89f9a0dcfaeefcd

Aliases

arxiv: 1903.04809 · arxiv_version: 1903.04809v1 · doi: 10.48550/arxiv.1903.04809 · pith_short_12: FJSATFJKSHQI · pith_short_16: FJSATFJKSHQIGH6Y · pith_short_8: FJSATFJK

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/FJSATFJKSHQIGH6YH7PGAV6SIZ \
  | 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: 2a6409952a91e0831fd83fde6057d246519ed00cfbf04286b89f9a0dcfaeefcd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50957c96404893740c48301b6279dbb41988140f4a1c96bcdb59a675170a7109",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2019-03-12T10:05:33Z",
    "title_canon_sha256": "e761a39e83d9744d9155c5d629e3db4f8ec14e269ebc84113dee17bbb1ac48f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.04809",
    "kind": "arxiv",
    "version": 1
  }
}