Pith Number

pith:X5LNOONP

pith:2015:X5LNOONPB7HYTSMEDWXT2DC52I

not attested not anchored not stored refs pending

A concise parametrisation of affine transformation

Hiroyuki Ochiai, Shizuo Kaji

arxiv:1507.05290 v2 · 2015-07-19 · cs.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{X5LNOONPB7HYTSMEDWXT2DC52I}

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	2026-05-18T01:11:27.317535Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf56d739af0fcf89c9841daf3d0c5dd238b63f050d88b9a7e6ef766398f5ff91

Aliases

arxiv: 1507.05290 · arxiv_version: 1507.05290v2 · doi: 10.48550/arxiv.1507.05290 · pith_short_12: X5LNOONPB7HY · pith_short_16: X5LNOONPB7HYTSME · pith_short_8: X5LNOONP

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/X5LNOONPB7HYTSMEDWXT2DC52I \
  | 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: bf56d739af0fcf89c9841daf3d0c5dd238b63f050d88b9a7e6ef766398f5ff91

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b29b5b6eeed47029989203360a78fb03df1e1c149fee9f0499c62837cce29ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.GR",
    "submitted_at": "2015-07-19T13:53:47Z",
    "title_canon_sha256": "e763825989ca1ca8b4f73edbecedaf7eefe26699c751913ec12367de53b1bc6f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.05290",
    "kind": "arxiv",
    "version": 2
  }
}