Pith Number

pith:MBHCULZP

pith:2018:MBHCULZPH6QHGADOXO27ET6MU4

not attested not anchored not stored refs pending

Optimizing B-spline surfaces for developability and paneling architectural freeform surfaces

Alexander Schiftner, Helmut Pottmann, Konstantinos Gavriil

arxiv:1808.07560 v3 · 2018-08-22 · cs.GR · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MBHCULZPH6QHGADOXO27ET6MU4}

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	2026-05-17T23:52:41.159502Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

604e2a2f2f3fa073006ebbb5f24fcca7373007743c61d97fe2ae5964e4703f6b

Aliases

arxiv: 1808.07560 · arxiv_version: 1808.07560v3 · doi: 10.48550/arxiv.1808.07560 · pith_short_12: MBHCULZPH6QH · pith_short_16: MBHCULZPH6QHGADO · pith_short_8: MBHCULZP

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/MBHCULZPH6QHGADOXO27ET6MU4 \
  | 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: 604e2a2f2f3fa073006ebbb5f24fcca7373007743c61d97fe2ae5964e4703f6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f4614ac1133df10d6124b658443f57868fec97c553a396da3a56d3f404a7847",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.GR",
    "submitted_at": "2018-08-22T20:53:08Z",
    "title_canon_sha256": "e0fa94bcec50ab0ee6b7d456c4b86790c90c69af5f889eab48b70394e27bac17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.07560",
    "kind": "arxiv",
    "version": 3
  }
}