Pith Number

pith:E3DABPJB

pith:2012:E3DABPJBSGSYMFE2J5VPMIEBVJ

not attested not anchored not stored refs pending

Finite convex geometries of circles

G\'abor Cz\'edli

arxiv:1212.3456 v2 · 2012-12-14 · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E3DABPJBSGSYMFE2J5VPMIEBVJ}

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	2026-05-18T03:25:16.053629Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26c600bd2191a586149a4f6af62081aa62996256d717dbfe4d6086afe3c0ba2c

Aliases

arxiv: 1212.3456 · arxiv_version: 1212.3456v2 · doi: 10.48550/arxiv.1212.3456 · pith_short_12: E3DABPJBSGSY · pith_short_16: E3DABPJBSGSYMFE2 · pith_short_8: E3DABPJB

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/E3DABPJBSGSYMFE2J5VPMIEBVJ \
  | 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: 26c600bd2191a586149a4f6af62081aa62996256d717dbfe4d6086afe3c0ba2c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "652db812cc6eff7e5412fd2d8d853d1a9f60d29301012e2deffc57554bb4a5b0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2012-12-14T12:46:07Z",
    "title_canon_sha256": "4213beb42536627daff9a3a9cb01abfed15c3b394a43298792e1de12c9e95dbc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.3456",
    "kind": "arxiv",
    "version": 2
  }
}