Pith Number

pith:FKQ3DS4C

pith:2019:FKQ3DS4CU5N3ANC3UYUUR256CE

not attested not anchored not stored refs pending

Limitations of Clustering Using Quantum Persistent Homology

Niels Neumann, Sterre den Breeijen

arxiv:1911.10781 v1 · 2019-11-25 · quant-ph · math.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FKQ3DS4CU5N3ANC3UYUUR256CE}

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	2026-07-05T00:21:42.698261Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2aa1b1cb82a75bb0345ba62948ebbe110d2a0b6bf1958150ea2bdd0f892e8bcd

Aliases

arxiv: 1911.10781 · arxiv_version: 1911.10781v1 · doi: 10.48550/arxiv.1911.10781 · pith_short_12: FKQ3DS4CU5N3 · pith_short_16: FKQ3DS4CU5N3ANC3 · pith_short_8: FKQ3DS4C

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/FKQ3DS4CU5N3ANC3UYUUR256CE \
  | 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: 2aa1b1cb82a75bb0345ba62948ebbe110d2a0b6bf1958150ea2bdd0f892e8bcd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c1b323ef49fc5248daf576ae77f8b950e0f4f4ce4f2173aff086f1d806a5090",
    "cross_cats_sorted": [
      "math.GN"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-11-25T09:30:20Z",
    "title_canon_sha256": "d59f72173c3a9133f3f3e1d4fabad19617eb75761650afb955ee302428f4e822"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.10781",
    "kind": "arxiv",
    "version": 1
  }
}