Pith Number

pith:5XPUICT6

pith:2002:5XPUICT6I77KZ7VAZ5KJL3J4D7

not attested not anchored not stored refs pending

Hilbert's "Verunglueckter Beweis," the first epsilon theorem, and consistency proofs

Richard Zach

arxiv:math/0204255 v2 · 2002-04-20 · math.LO · math.HO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5XPUICT6I77KZ7VAZ5KJL3J4D7}

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	2026-05-18T02:18:24.168167Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eddf440a7e47feacfea0cf5495ed3c1fe196a9ac4a498f5d12fffb08c7b9e6b6

Aliases

arxiv: math/0204255 · arxiv_version: math/0204255v2 · doi: 10.48550/arxiv.math/0204255 · pith_short_12: 5XPUICT6I77K · pith_short_16: 5XPUICT6I77KZ7VA · pith_short_8: 5XPUICT6

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/5XPUICT6I77KZ7VAZ5KJL3J4D7 \
  | 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: eddf440a7e47feacfea0cf5495ed3c1fe196a9ac4a498f5d12fffb08c7b9e6b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c2645f1d7c789b0cb6997a682089729c20d4409d91670d906308f80de7dae08",
    "cross_cats_sorted": [
      "math.HO"
    ],
    "license": "",
    "primary_cat": "math.LO",
    "submitted_at": "2002-04-20T21:19:41Z",
    "title_canon_sha256": "6012cab1d37acb565685464cb1b8eba1c0437d4c9bfd8543e89e8d31885aeded"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0204255",
    "kind": "arxiv",
    "version": 2
  }
}