Pith Number

pith:63NN7TU4

pith:2011:63NN7TU4EXLQFSPLUFY3PGYIOQ

not attested not anchored not stored refs pending

Curvature line parametrized surfaces and orthogonal coordinate systems. Discretization with Dupin cyclides

Alexander I. Bobenko, Emanuel Huhnen-Venedey

arxiv:1101.5955 v2 · 2011-01-31 · 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{63NN7TU4EXLQFSPLUFY3PGYIOQ}

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	2026-05-18T02:22:41.780414Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6dadfce9c25d702c9eba171b79b08740d61ca419503bfc4db6dce303822d63c

Aliases

arxiv: 1101.5955 · arxiv_version: 1101.5955v2 · doi: 10.48550/arxiv.1101.5955 · pith_short_12: 63NN7TU4EXLQ · pith_short_16: 63NN7TU4EXLQFSPL · pith_short_8: 63NN7TU4

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/63NN7TU4EXLQFSPLUFY3PGYIOQ \
  | 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: f6dadfce9c25d702c9eba171b79b08740d61ca419503bfc4db6dce303822d63c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84fc6f58d222eebb0ea745fba2bdc62c80bd6d01ad82ff6afb59b7056da90d47",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2011-01-31T13:29:49Z",
    "title_canon_sha256": "ca1afbbe7c22bee60d96a191f40df7d193a63ff92c0540196119fb7b203a10a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.5955",
    "kind": "arxiv",
    "version": 2
  }
}