Pith Number

pith:3KQUF4YG

pith:2005:3KQUF4YGAHSTEFZEY4USDAFLIE

not attested not anchored not stored refs pending

Topology of plane sections of periodic polyhedra with an application to the Truncated Octahedron

Roberto De Leo

arxiv:math/0502219 v2 · 2005-02-10 · math.DG · cs.NA · math.DS · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3KQUF4YGAHSTEFZEY4USDAFLIE}

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	2026-06-03T22:06:16.333705Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

daa142f30601e5321724c7292180ab413e1822f2049b46fe84e8f52646a04694

Aliases

arxiv: math/0502219 · arxiv_version: math/0502219v2 · doi: 10.48550/arxiv.math/0502219 · pith_short_12: 3KQUF4YGAHST · pith_short_16: 3KQUF4YGAHSTEFZE · pith_short_8: 3KQUF4YG

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/3KQUF4YGAHSTEFZEY4USDAFLIE \
  | 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: daa142f30601e5321724c7292180ab413e1822f2049b46fe84e8f52646a04694

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da66fca34ad8abdaa7b63d321f9b84931dc9fa8044b503c64090e1d547fb61b8",
    "cross_cats_sorted": [
      "cs.NA",
      "math.DS",
      "math.NA"
    ],
    "license": "",
    "primary_cat": "math.DG",
    "submitted_at": "2005-02-10T19:01:38Z",
    "title_canon_sha256": "f86cbb7e21195e2ac94dafab16fa46df9c60891c0e6b7675db64ad55cb27ae3e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0502219",
    "kind": "arxiv",
    "version": 2
  }
}