Pith Number

pith:IDMVPWHW

pith:2026:IDMVPWHWGRKUSNCDVZS5OA4RVD

not attested not anchored not stored refs pending

A Negative Answer to Question 17.102 in The Kourovka Notebook

Suhui Wan

arxiv:2608.00504 v1 · 2026-08-01 · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IDMVPWHWGRKUSNCDVZS5OA4RVD}

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	2026-08-04T00:37:05.084259Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

40d957d8f63455493443ae65d70391a8f2915342e1d44675630f8825e5dbd474

Aliases

arxiv: 2608.00504 · arxiv_version: 2608.00504v1 · doi: 10.48550/arxiv.2608.00504 · pith_short_12: IDMVPWHWGRKU · pith_short_16: IDMVPWHWGRKUSNCD · pith_short_8: IDMVPWHW

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/IDMVPWHWGRKUSNCDVZS5OA4RVD \
  | 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: 40d957d8f63455493443ae65d70391a8f2915342e1d44675630f8825e5dbd474

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4075913d234e7fe1594821a026e7c3247f170f2f11da80f8e0ce1c7132bc99d",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2026-08-01T07:55:09Z",
    "title_canon_sha256": "50b3d6d02f1220b7aa554ccee2ddf3e79ab108c35acc6ead58555aa136555792"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.00504",
    "kind": "arxiv",
    "version": 1
  }
}