Pith Number

pith:QQXQGWQ5

pith:2018:QQXQGWQ5NW4G3WYJVC6DH3C3V7

not attested not anchored not stored refs pending

Weakly almost periodic topologies, idempotents and ideals

Nico Spronk

arxiv:1805.09892 v2 · 2018-05-24 · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QQXQGWQ5NW4G3WYJVC6DH3C3V7}

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	2026-05-18T00:12:37.831927Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

842f035a1d6db86ddb09a8bc33ec5baff8f5fce523c6c81c5cb0649e29548ac2

Aliases

arxiv: 1805.09892 · arxiv_version: 1805.09892v2 · doi: 10.48550/arxiv.1805.09892 · pith_short_12: QQXQGWQ5NW4G · pith_short_16: QQXQGWQ5NW4G3WYJ · pith_short_8: QQXQGWQ5

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/QQXQGWQ5NW4G3WYJVC6DH3C3V7 \
  | 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: 842f035a1d6db86ddb09a8bc33ec5baff8f5fce523c6c81c5cb0649e29548ac2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1855c0bca3bdfe0762fae5b7f3fa1d1d4388966dff1b33a8ae4c6506edcc9fa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2018-05-24T20:46:53Z",
    "title_canon_sha256": "04e9234a2494a80a7cdf1eb2d24d56b585d470880e2947817022d0e5028548a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.09892",
    "kind": "arxiv",
    "version": 2
  }
}