Pith Number

pith:WZQQGXIK

pith:2012:WZQQGXIKWMRSFLDCZJ4M2TA4ME

not attested not anchored not stored refs pending

Remarks on countable tightness

Marion Scheepers

arxiv:1201.4909 v3 · 2012-01-24 · math.GN · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WZQQGXIKWMRSFLDCZJ4M2TA4ME}

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	2026-05-18T03:10:00.392503Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b661035d0ab32322ac62ca78cd4c1c61083c0b057dfaeeaca6e35245b6bf573a

Aliases

arxiv: 1201.4909 · arxiv_version: 1201.4909v3 · doi: 10.48550/arxiv.1201.4909 · pith_short_12: WZQQGXIKWMRS · pith_short_16: WZQQGXIKWMRSFLDC · pith_short_8: WZQQGXIK

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/WZQQGXIKWMRSFLDCZJ4M2TA4ME \
  | 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: b661035d0ab32322ac62ca78cd4c1c61083c0b057dfaeeaca6e35245b6bf573a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8188bd7cabe987e7068fe8cfb38b4855f8c6f845bab322fdcaa70ea3a0bf395b",
    "cross_cats_sorted": [
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2012-01-24T03:36:20Z",
    "title_canon_sha256": "eb18337a75a11f4c9d96a2d6fd97786610171d879b990687133528708a2d08c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.4909",
    "kind": "arxiv",
    "version": 3
  }
}