Pith Number

pith:SKKKD2AZ

pith:2014:SKKKD2AZBDMFYVT7ER5MK54CEW

not attested not anchored not stored refs pending

Classification theory for accessible categories

Jir\'i Rosick\'y, Michael Lieberman

arxiv:1404.2528 v4 · 2014-04-09 · math.LO · math.CT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SKKKD2AZBDMFYVT7ER5MK54CEW}

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	2026-05-18T02:33:01.245076Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9294a1e81908d85c567f247ac5778225b94c131008392f5bec2e16432a779052

Aliases

arxiv: 1404.2528 · arxiv_version: 1404.2528v4 · doi: 10.48550/arxiv.1404.2528 · pith_short_12: SKKKD2AZBDMF · pith_short_16: SKKKD2AZBDMFYVT7 · pith_short_8: SKKKD2AZ

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/SKKKD2AZBDMFYVT7ER5MK54CEW \
  | 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: 9294a1e81908d85c567f247ac5778225b94c131008392f5bec2e16432a779052

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7c1b4e0cd683aed86b6e1ecf387097fe62f8482cc72e9581d19c4f80be8b7c6",
    "cross_cats_sorted": [
      "math.CT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2014-04-09T15:59:22Z",
    "title_canon_sha256": "e730e3bd423d8b2a702d23a043c124cd73784093b4b6fcc919dd31ded9e62d8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.2528",
    "kind": "arxiv",
    "version": 4
  }
}