Pith Number

pith:U4HPZAYA

pith:2017:U4HPZAYA5ZHAYRQ5JGMJFPITYI

not attested not anchored not stored refs pending

On the universality of the nonstationary ideal

Sean Cox

arxiv:1704.05791 v3 · 2017-04-19 · 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{U4HPZAYA5ZHAYRQ5JGMJFPITYI}

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	2026-05-18T00:34:57.301074Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a70efc8300ee4e0c461d499892bd13c2021139492c086c0d5b94b9ac45aebe62

Aliases

arxiv: 1704.05791 · arxiv_version: 1704.05791v3 · doi: 10.48550/arxiv.1704.05791 · pith_short_12: U4HPZAYA5ZHA · pith_short_16: U4HPZAYA5ZHAYRQ5 · pith_short_8: U4HPZAYA

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/U4HPZAYA5ZHAYRQ5JGMJFPITYI \
  | 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: a70efc8300ee4e0c461d499892bd13c2021139492c086c0d5b94b9ac45aebe62

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2bdccb2513b0ce4a93230a1b477c5995cb926743b108e4a3a5d008510341d1d7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2017-04-19T16:00:45Z",
    "title_canon_sha256": "687c96497ce1674d2926c8170c05f23b1ccb918be34aacf2d81c74bddbea34e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.05791",
    "kind": "arxiv",
    "version": 3
  }
}