Pith Number

pith:7UIH6ZRK

pith:2024:7UIH6ZRKLTS7SQUZBXKQODNEL2

not attested not anchored not stored refs pending

Distinguishing Internally Club and Approachable on an Infinite Interval

Hannes Jakob, Maxwell Levine

arxiv:2404.15230 v1 · 2024-04-23 · 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{7UIH6ZRKLTS7SQUZBXKQODNEL2}

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	2026-07-05T08:11:17.139074Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd107f662a5ce5f942990dd5070da45ebb9ba48af5396ce93ce2f56878e255f2

Aliases

arxiv: 2404.15230 · arxiv_version: 2404.15230v1 · doi: 10.48550/arxiv.2404.15230 · pith_short_12: 7UIH6ZRKLTS7 · pith_short_16: 7UIH6ZRKLTS7SQUZ · pith_short_8: 7UIH6ZRK

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/7UIH6ZRKLTS7SQUZBXKQODNEL2 \
  | 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: fd107f662a5ce5f942990dd5070da45ebb9ba48af5396ce93ce2f56878e255f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f1ae796f0c5ae474f29a0042520a91d639dc3f1bc09b6c52def391921e33d7e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2024-04-23T17:02:50Z",
    "title_canon_sha256": "d8196accbc3ba2fe4be7e07431b9f8af6815e7209c71d17096e3fc78e2c58571"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2404.15230",
    "kind": "arxiv",
    "version": 1
  }
}