Pith Number

pith:KWCMHB2F

pith:2012:KWCMHB2FXIY26NEJ7Z3O4GT4KQ

not attested not anchored not stored refs pending

Around Podewski's conjecture

Frank O. Wagner, Krzysztof Krupi\'nski, Predrag Tanovi\'c

arxiv:1201.5709 v2 · 2012-01-27 · 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{KWCMHB2FXIY26NEJ7Z3O4GT4KQ}

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	2026-05-18T03:05:55.157904Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5584c38745ba31af3489fe76ee1a7c5407863aa7ccb0372f81756cac6d1b20b8

Aliases

arxiv: 1201.5709 · arxiv_version: 1201.5709v2 · doi: 10.48550/arxiv.1201.5709 · pith_short_12: KWCMHB2FXIY2 · pith_short_16: KWCMHB2FXIY26NEJ · pith_short_8: KWCMHB2F

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/KWCMHB2FXIY26NEJ7Z3O4GT4KQ \
  | 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: 5584c38745ba31af3489fe76ee1a7c5407863aa7ccb0372f81756cac6d1b20b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d15fb91d1cbe29673a61dde4b71cdb2840c0df89924551b01bf6f212b049bf6a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2012-01-27T07:06:43Z",
    "title_canon_sha256": "58a09082e47afc0f1e524805289c47d9cb8fe60d8ee198a4c73ed760dc826c68"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.5709",
    "kind": "arxiv",
    "version": 2
  }
}