Pith Number

pith:URRFQ6P4

pith:2018:URRFQ6P4KTLVQGT6JZLQYZB6F5

not attested not anchored not stored refs pending

Constructing Trivariate B-splines with Positive Jacobian by Pillow Operation and Geometric Iterative Fitting

Chuanfeng Hu, Hao Huang, Hongwei Lin

arxiv:1811.12597 v1 · 2018-11-30 · cs.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{URRFQ6P4KTLVQGT6JZLQYZB6F5}

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	2026-05-17T23:59:29.113860Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4625879fc54d7581a7e4e570c643e2f525a71c4753f2e021252b54931e57c5b

Aliases

arxiv: 1811.12597 · arxiv_version: 1811.12597v1 · doi: 10.48550/arxiv.1811.12597 · pith_short_12: URRFQ6P4KTLV · pith_short_16: URRFQ6P4KTLVQGT6 · pith_short_8: URRFQ6P4

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/URRFQ6P4KTLVQGT6JZLQYZB6F5 \
  | 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: a4625879fc54d7581a7e4e570c643e2f525a71c4753f2e021252b54931e57c5b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "630d37dbb53f2ec80eed0b97c068ea975edcb32cf803ea123ab198ca8bb2b538",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.GR",
    "submitted_at": "2018-11-30T03:21:19Z",
    "title_canon_sha256": "7687d18a5e34a3a5f28fc99d3dcdce88f08fb98adeb6eb06ef605b790a83e20b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.12597",
    "kind": "arxiv",
    "version": 1
  }
}