Pith Number

pith:SEFPQ5NL

pith:2019:SEFPQ5NLHDCDRGI2M22UHU6NQI

not attested not anchored not stored refs pending

On topological classification of normed spaces endowed with the weak topology or the topology of compact convergence

Taras Banakh

arxiv:1908.09115 v1 · 2019-08-24 · math.GN · 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{SEFPQ5NLHDCDRGI2M22UHU6NQI}

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	2026-07-04T23:59:36.894724Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

910af875ab38c438991a66b543d3cd822719cb439e23634e0acacd024c0fd6d1

Aliases

arxiv: 1908.09115 · arxiv_version: 1908.09115v1 · doi: 10.48550/arxiv.1908.09115 · pith_short_12: SEFPQ5NLHDCD · pith_short_16: SEFPQ5NLHDCDRGI2 · pith_short_8: SEFPQ5NL

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/SEFPQ5NLHDCDRGI2M22UHU6NQI \
  | 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: 910af875ab38c438991a66b543d3cd822719cb439e23634e0acacd024c0fd6d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb1b7bc252dce9514c40cbe7a2521308b8872a7343d50c0385348992c9e2b845",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2019-08-24T09:41:33Z",
    "title_canon_sha256": "44f95150cdc2ae07a35f920591586684a0c6ba548136508f31bd7c7c7a8647ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.09115",
    "kind": "arxiv",
    "version": 1
  }
}