Pith Number

pith:D7YY37LH

pith:2018:D7YY37LHGVOEWZJLOBDBKRXGAK

not attested not anchored not stored refs pending

On solids whose (entire) surface can be unfolded onto a plane

Alexander Aycock (Translator), Leonhard Euler (Original Author)

arxiv:1810.00173 v1 · 2018-09-29 · 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{D7YY37LHGVOEWZJLOBDBKRXGAK}

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	2026-05-18T00:04:28.597366Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ff18dfd67355c4b652b70461546e60285d24264beefd3e4cf5c1b90cdefcb51

Aliases

arxiv: 1810.00173 · arxiv_version: 1810.00173v1 · doi: 10.48550/arxiv.1810.00173 · pith_short_12: D7YY37LHGVOE · pith_short_16: D7YY37LHGVOEWZJL · pith_short_8: D7YY37LH

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/D7YY37LHGVOEWZJLOBDBKRXGAK \
  | 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: 1ff18dfd67355c4b652b70461546e60285d24264beefd3e4cf5c1b90cdefcb51

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30f266981510bd6f2f3c4331e75f43279ebbc050439a2574436a73d2ebc5721e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2018-09-29T08:49:26Z",
    "title_canon_sha256": "73f27c285f956df108f90fb162970796780711b7202a2d58f58f19395d4900de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.00173",
    "kind": "arxiv",
    "version": 1
  }
}