Pith Number

pith:WGGBDLQV

pith:2005:WGGBDLQVDZ2SNSXSBV6XCSGB7B

not attested not anchored not stored refs pending

Undecidable proposition in PA and Diophantine equation

T. Mei

arxiv:math/0502321 v3 · 2005-02-15 · 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{WGGBDLQVDZ2SNSXSBV6XCSGB7B}

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	2026-05-18T04:08:35.760050Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b18c11ae151e7526caf20d7d7148c1f8543c2e0926d1a98788cc1a103f27e8df

Aliases

arxiv: math/0502321 · arxiv_version: math/0502321v3 · doi: 10.48550/arxiv.math/0502321 · pith_short_12: WGGBDLQVDZ2S · pith_short_16: WGGBDLQVDZ2SNSXS · pith_short_8: WGGBDLQV

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/WGGBDLQVDZ2SNSXSBV6XCSGB7B \
  | 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: b18c11ae151e7526caf20d7d7148c1f8543c2e0926d1a98788cc1a103f27e8df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63e02c06e36a33f16c7df601f1580d40c0ef6b942599f633344d27be223c61be",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.LO",
    "submitted_at": "2005-02-15T17:16:59Z",
    "title_canon_sha256": "d022616f19f9634a12b8dd3dd4a3d955800edf55d57378179cab78b31a499d04"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0502321",
    "kind": "arxiv",
    "version": 3
  }
}