Pith Number

pith:B2GXS6OP

pith:2016:B2GXS6OPKRMCXKB5A36UN2EQKV

not attested not anchored not stored refs pending

Squares from any Quadrilateral

Pierre Godard

arxiv:1605.09283 v1 · 2016-05-27 · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{B2GXS6OPKRMCXKB5A36UN2EQKV}

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	2026-05-18T01:13:21.491423Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0e8d7979cf54582ba83d06fd46e8905570a106c1d0e82abe75d179862437492d

Aliases

arxiv: 1605.09283 · arxiv_version: 1605.09283v1 · doi: 10.48550/arxiv.1605.09283 · pith_short_12: B2GXS6OPKRMC · pith_short_16: B2GXS6OPKRMCXKB5 · pith_short_8: B2GXS6OP

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/B2GXS6OPKRMCXKB5A36UN2EQKV \
  | 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: 0e8d7979cf54582ba83d06fd46e8905570a106c1d0e82abe75d179862437492d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8abff7a3c8b518fac5ca63212692bf4df005e207245f6712e8a190c4d84d205",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2016-05-27T16:18:10Z",
    "title_canon_sha256": "1f22b076c8a267c0a91db21afa0557f9d7fd5e9549c69d9a94ec48adfbe3bab7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.09283",
    "kind": "arxiv",
    "version": 1
  }
}