Pith Number

pith:4F5LFO7S

pith:2011:4F5LFO7SBI7DUZ2OQ7EDSIACPA

not attested not anchored not stored refs pending

Set-theoretic problems concerning Lindelof spaces

Franklin D. Tall

arxiv:1104.2796 v1 · 2011-04-14 · math.LO · 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{4F5LFO7SBI7DUZ2OQ7EDSIACPA}

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	2026-05-18T04:24:05.710066Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e17ab2bbf20a3e3a674e87c8392002781fba4a62cfb61cca86d6a87833a0d276

Aliases

arxiv: 1104.2796 · arxiv_version: 1104.2796v1 · doi: 10.48550/arxiv.1104.2796 · pith_short_12: 4F5LFO7SBI7D · pith_short_16: 4F5LFO7SBI7DUZ2O · pith_short_8: 4F5LFO7S

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/4F5LFO7SBI7DUZ2OQ7EDSIACPA \
  | 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: e17ab2bbf20a3e3a674e87c8392002781fba4a62cfb61cca86d6a87833a0d276

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6642bfdae6911fbcc96a68505689a9147b6a879f58275ff04ee49b0004a5dca",
    "cross_cats_sorted": [
      "math.GN"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2011-04-14T15:11:59Z",
    "title_canon_sha256": "08ab0438a5cb9e2d72c7bb9b51f871703310b1faf8e341bec23516f2f7302275"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.2796",
    "kind": "arxiv",
    "version": 1
  }
}