Pith Number

pith:BSD7R2OT

pith:2026:BSD7R2OTDSAAEDKAXJCR2WN3UM

not attested not anchored not stored refs pending

Besant quadrilaterals

Alan Horwitz

arxiv:2605.20216 v1 · 2026-05-07 · 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{BSD7R2OTDSAAEDKAXJCR2WN3UM}

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	2026-05-21T00:04:21.426996Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c87f8e9d31c80020d40ba451d59bba338252801f01d15c294ae64dcd2781724

Aliases

arxiv: 2605.20216 · arxiv_version: 2605.20216v1 · doi: 10.48550/arxiv.2605.20216 · pith_short_12: BSD7R2OTDSAA · pith_short_16: BSD7R2OTDSAAEDKA · pith_short_8: BSD7R2OT

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/BSD7R2OTDSAAEDKAXJCR2WN3UM \
  | 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: 0c87f8e9d31c80020d40ba451d59bba338252801f01d15c294ae64dcd2781724

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5db95779b75a78525f3906ed0a2781433006583d5c5fdbcb4ff30f23793a3c33",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2026-05-07T15:29:58Z",
    "title_canon_sha256": "d9a097cc0378830053b1a9ad5354763fa4a63e8f80ee4917d38082447f05dcb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.20216",
    "kind": "arxiv",
    "version": 1
  }
}