Pith Number

pith:4KEHFJIB

pith:2017:4KEHFJIBHI63LYT526HR3H7J2T

not attested not anchored not stored refs pending

Haga's theorems in paper folding and related theorems in Wasan geometry Part 1

Hiroshi Okumura

arxiv:1711.10750 v5 · 2017-11-29 · 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{4KEHFJIBHI63LYT526HR3H7J2T}

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	2026-05-18T00:27:17.537065Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e28872a5013a3db5e27dd78f1d9fe9d4cb2631a7ffde59da530834f62f86741b

Aliases

arxiv: 1711.10750 · arxiv_version: 1711.10750v5 · doi: 10.48550/arxiv.1711.10750 · pith_short_12: 4KEHFJIBHI63 · pith_short_16: 4KEHFJIBHI63LYT5 · pith_short_8: 4KEHFJIB

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/4KEHFJIBHI63LYT526HR3H7J2T \
  | 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: e28872a5013a3db5e27dd78f1d9fe9d4cb2631a7ffde59da530834f62f86741b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1410b36262ae4f6f989fb522eabf1bbec3105e758311c3a1bc0eb545c1907b10",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2017-11-29T09:57:18Z",
    "title_canon_sha256": "82dda89bb1c6b31bbae65c8c6e78c89ed8ec4df783a24380059ea6485bc79366"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.10750",
    "kind": "arxiv",
    "version": 5
  }
}