Pith Number

pith:JLKK3NWM

pith:2014:JLKK3NWMKOYNZXV7Y23FJT2E54

not attested not anchored not stored refs pending

A more general method to classify up to equivariant KK-equivalence

Ralf Meyer, Rasmus Bentmann

arxiv:1405.6512 v2 · 2014-05-26 · math.OA · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JLKK3NWMKOYNZXV7Y23FJT2E54}

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	2026-05-18T00:46:08.580397Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4ad4adb6cc53b0dcdebfc6b654cf44ef0c15a8eefcd8c246f27b0e1d14a2146e

Aliases

arxiv: 1405.6512 · arxiv_version: 1405.6512v2 · doi: 10.48550/arxiv.1405.6512 · pith_short_12: JLKK3NWMKOYN · pith_short_16: JLKK3NWMKOYNZXV7 · pith_short_8: JLKK3NWM

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/JLKK3NWMKOYNZXV7Y23FJT2E54 \
  | 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: 4ad4adb6cc53b0dcdebfc6b654cf44ef0c15a8eefcd8c246f27b0e1d14a2146e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e4ae6a39d56a9d5b81290d991e2f46d0f89e101ed3c6704d627a76f4877e2356",
    "cross_cats_sorted": [
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2014-05-26T09:23:02Z",
    "title_canon_sha256": "b19b324a329b0aec69b45e8e9d9d7578ff77175d31eb701a0b71ce9f721633aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.6512",
    "kind": "arxiv",
    "version": 2
  }
}