Pith Number

pith:RI6NWCND

pith:2026:RI6NWCNDFLJCE565JFBF3HRFWL

not attested not anchored not stored refs pending

The Arithmetic of Chess Piece Strength on the n x n Board

Frank M. V. Feys

arxiv:2605.20229 v1 · 2026-05-15 · math.GM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RI6NWCNDFLJCE565JFBF3HRFWL}

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	2026-05-21T00:04:21.850643Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a3cdb09a32ad22277dd49425d9e25b2cdac9671fadcb2817d71639febc981b8

Aliases

arxiv: 2605.20229 · arxiv_version: 2605.20229v1 · doi: 10.48550/arxiv.2605.20229 · pith_short_12: RI6NWCNDFLJC · pith_short_16: RI6NWCNDFLJCE565 · pith_short_8: RI6NWCND

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/RI6NWCNDFLJCE565JFBF3HRFWL \
  | 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: 8a3cdb09a32ad22277dd49425d9e25b2cdac9671fadcb2817d71639febc981b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9cdef896ec52c1fd43ead7ced083d6d134a74605a6a5fe331dcb938104957283",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GM",
    "submitted_at": "2026-05-15T10:49:47Z",
    "title_canon_sha256": "51e6c8f6c3aa41c9839a60beb36ea01940830d9f616e56366015191ec8ad8b97"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.20229",
    "kind": "arxiv",
    "version": 1
  }
}