Pith Number

pith:CVAMAVUW

pith:2014:CVAMAVUWCIK42EZSAVACV5T7SO

not attested not anchored not stored refs pending

Survey on the Tukey theory of ultrafilters

Natasha Dobrinen

arxiv:1401.8108 v1 · 2014-01-31 · 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{CVAMAVUWCIK42EZSAVACV5T7SO}

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	2026-05-18T03:00:36.112861Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1540c056961215cd133205402af67f9391a61b01cce87c775f52cbd30c833112

Aliases

arxiv: 1401.8108 · arxiv_version: 1401.8108v1 · doi: 10.48550/arxiv.1401.8108 · pith_short_12: CVAMAVUWCIK4 · pith_short_16: CVAMAVUWCIK42EZS · pith_short_8: CVAMAVUW

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/CVAMAVUWCIK42EZSAVACV5T7SO \
  | 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: 1540c056961215cd133205402af67f9391a61b01cce87c775f52cbd30c833112

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd198c71862f092a6a25f8efb770e2fa8717df1f8ef592571fcd3521c83574a6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2014-01-31T10:01:45Z",
    "title_canon_sha256": "26182f9cce79632745e6e015a3b17d1c1ff4375fa8234c74b731122069e39b5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.8108",
    "kind": "arxiv",
    "version": 1
  }
}