Pith Number

pith:5R3EDUTQ

pith:2016:5R3EDUTQK24ZGZNXIWA7S3RFFN

not attested not anchored not stored refs pending

Noncongruent equidissections of the plane

Dirk Frettl\"oh

arxiv:1603.09132 v1 · 2016-03-30 · 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{5R3EDUTQK24ZGZNXIWA7S3RFFN}

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	2026-05-18T01:18:03.033991Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec7641d27056b99365b74581f96e252b45be9729f4a3de72d709da9cc74b038f

Aliases

arxiv: 1603.09132 · arxiv_version: 1603.09132v1 · doi: 10.48550/arxiv.1603.09132 · pith_short_12: 5R3EDUTQK24Z · pith_short_16: 5R3EDUTQK24ZGZNX · pith_short_8: 5R3EDUTQ

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/5R3EDUTQK24ZGZNXIWA7S3RFFN \
  | 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: ec7641d27056b99365b74581f96e252b45be9729f4a3de72d709da9cc74b038f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e74d9918deede3f40b8d1c514b112e60bdd73a28c876e6b2ef2b7cfdb0f703c5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2016-03-30T11:18:39Z",
    "title_canon_sha256": "6c0791203ddbd02eaa475b5cbff3064ad2160cf6a43d767580a302495cad8f48"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.09132",
    "kind": "arxiv",
    "version": 1
  }
}