Pith Number

pith:CK5EXFO6

pith:2017:CK5EXFO65PEH5RNJIHLW2G4ZJL

not attested not anchored not stored refs pending

A Polynomial Spectral Calculus for Analysis of DG Spectral Element Methods

David A. Kopriva

arxiv:1704.00709 v1 · 2017-04-03 · 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{CK5EXFO65PEH5RNJIHLW2G4ZJL}

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	2026-05-18T00:47:21.528367Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

12ba4b95deebc87ec5a941d76d1b994ae50bd4f429a23edfe72c4c0a7e9d328a

Aliases

arxiv: 1704.00709 · arxiv_version: 1704.00709v1 · doi: 10.48550/arxiv.1704.00709 · pith_short_12: CK5EXFO65PEH · pith_short_16: CK5EXFO65PEH5RNJ · pith_short_8: CK5EXFO6

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/CK5EXFO65PEH5RNJIHLW2G4ZJL \
  | 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: 12ba4b95deebc87ec5a941d76d1b994ae50bd4f429a23edfe72c4c0a7e9d328a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e6588604c3b81cd4ec4c63e54a9cc03620904468f6cffb2401f71587e0c6bd3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-04-03T17:52:14Z",
    "title_canon_sha256": "209a5dfce3aa1e50579b188dbdedfbef93e3c7f365d407e2fd28f86dd3c6a4bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.00709",
    "kind": "arxiv",
    "version": 1
  }
}