Pith Number

pith:BA4OPK7Z

pith:2014:BA4OPK7Z44DHQZFR6CQMMNOC7M

not attested not anchored not stored refs pending

The classification problem for finitely generated operator systems and spaces

Marcin Sabok, Mart\'in Argerami, Martino Lupini, Matthew Kennedy, Mehrdad Kalantar, Samuel Coskey

arxiv:1411.0512 v3 · 2014-11-03 · math.OA · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BA4OPK7Z44DHQZFR6CQMMNOC7M}

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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	2026-05-18T01:20:21.065866Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0838e7abf9e7067864b1f0a0c635c2fb29766c151e3b9f72fd31cf1f54063e44

Aliases

arxiv: 1411.0512 · arxiv_version: 1411.0512v3 · doi: 10.48550/arxiv.1411.0512 · pith_short_12: BA4OPK7Z44DH · pith_short_16: BA4OPK7Z44DHQZFR · pith_short_8: BA4OPK7Z

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/BA4OPK7Z44DHQZFR6CQMMNOC7M \
  | 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: 0838e7abf9e7067864b1f0a0c635c2fb29766c151e3b9f72fd31cf1f54063e44

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec387fa91554937cd8ef0273303e0e9f3b4e6af2febcdc20c91d04afb3e36992",
    "cross_cats_sorted": [
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2014-11-03T15:00:11Z",
    "title_canon_sha256": "79db0c8caa99de6937ff34a06c717393f88a2259760c88c70832370ddf783885"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.0512",
    "kind": "arxiv",
    "version": 3
  }
}