Pith Number

pith:WV6FEPVU

pith:2013:WV6FEPVUJ5TUU4MCWDQ72RCZQE

not attested not anchored not stored refs pending

Hausdorff gaps and towers in P(\omega)/Fin

David Chodounsk\'y, Piotr Borodulin-Nadzieja

arxiv:1302.4550 v2 · 2013-02-19 · 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{WV6FEPVUJ5TUU4MCWDQ72RCZQE}

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	2026-05-18T02:41:26.310505Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b57c523eb44f674a7182b0e1fd4459811d313720fa6a829c3f52c22510e73aaf

Aliases

arxiv: 1302.4550 · arxiv_version: 1302.4550v2 · doi: 10.48550/arxiv.1302.4550 · pith_short_12: WV6FEPVUJ5TU · pith_short_16: WV6FEPVUJ5TUU4MC · pith_short_8: WV6FEPVU

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/WV6FEPVUJ5TUU4MCWDQ72RCZQE \
  | 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: b57c523eb44f674a7182b0e1fd4459811d313720fa6a829c3f52c22510e73aaf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "794fd27d89ed2339cfb71f488522b715bfd5e40196a2641252085adadbc702ed",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2013-02-19T09:25:17Z",
    "title_canon_sha256": "070b7f1f4885a17a35e9c211eaa67e6eee6ab21f80c37ea3ac71f39c7ceaf9ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.4550",
    "kind": "arxiv",
    "version": 2
  }
}