Pith Number

pith:TJZ6RI7B

pith:2018:TJZ6RI7BSRAG6B6GQHTQN6OVBY

not attested not anchored not stored refs pending

Data-driven polynomial chaos expansions: a weighted least-square approximation

Ling Guo, Tao Zhou, Yongle Liu

arxiv:1805.10893 v1 · 2018-05-28 · 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{TJZ6RI7BSRAG6B6GQHTQN6OVBY}

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	2026-05-17T23:53:30.854942Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a73e8a3e194406f07c681e706f9d50e1e9fd39b76c16c8b85e1e098e67f133e

Aliases

arxiv: 1805.10893 · arxiv_version: 1805.10893v1 · doi: 10.48550/arxiv.1805.10893 · pith_short_12: TJZ6RI7BSRAG · pith_short_16: TJZ6RI7BSRAG6B6G · pith_short_8: TJZ6RI7B

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/TJZ6RI7BSRAG6B6GQHTQN6OVBY \
  | 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: 9a73e8a3e194406f07c681e706f9d50e1e9fd39b76c16c8b85e1e098e67f133e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "926bd3c029294ebb66e82369b60470483e41b8d7603fde24bf9a436a16e90176",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-05-28T12:40:31Z",
    "title_canon_sha256": "eaedd74175cea0fb05bc593116f8187fa9023573594dd55cd612cf81b6ef4723"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.10893",
    "kind": "arxiv",
    "version": 1
  }
}