Pith Number

pith:N2F6J7BQ

pith:2004:N2F6J7BQU53H2WUTV2XVSFPKW3

not attested not anchored not stored refs pending

Formative processes with applications to the decision problem in set theory: II. powerset and singleton operators, finiteness predicate

Domenico Cantone, Pietro Ursino

arxiv:math/0411227 v3 · 2004-11-10 · math.LO · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N2F6J7BQU53H2WUTV2XVSFPKW3}

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	2026-05-18T03:19:44.383149Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e8be4fc30a7767d5a93aeaf5915eab6ffe39d8b9145b85f34e4674750df36c3

Aliases

arxiv: math/0411227 · arxiv_version: math/0411227v3 · doi: 10.48550/arxiv.math/0411227 · pith_short_12: N2F6J7BQU53H · pith_short_16: N2F6J7BQU53H2WUT · pith_short_8: N2F6J7BQ

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/N2F6J7BQU53H2WUTV2XVSFPKW3 \
  | 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: 6e8be4fc30a7767d5a93aeaf5915eab6ffe39d8b9145b85f34e4674750df36c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "503a1fb0bfb28b8fb37b2ceb2a0e01b20975a7dbccea70e7bb97ad3cc67a47d5",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2004-11-10T13:02:43Z",
    "title_canon_sha256": "2f0ae33aed7db76b1564aca9f0d62aefe78982c5b7b0e49837d3ad25fa870da7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0411227",
    "kind": "arxiv",
    "version": 3
  }
}