Pith Number

pith:WLNIP4UJ

pith:2015:WLNIP4UJBJUCQYJDIJEHQXZVG4

not attested not anchored not stored refs pending

On the Chebyshev approximation of a function with two variables

Ernest Scheiber

arxiv:1504.04693 v1 · 2015-04-18 · 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{WLNIP4UJBJUCQYJDIJEHQXZVG4}

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	2026-05-18T02:18:30.691017Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2da87f2890a682861234248785f353704f654c460d3d84348f99b3037c58666

Aliases

arxiv: 1504.04693 · arxiv_version: 1504.04693v1 · doi: 10.48550/arxiv.1504.04693 · pith_short_12: WLNIP4UJBJUC · pith_short_16: WLNIP4UJBJUCQYJD · pith_short_8: WLNIP4UJ

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/WLNIP4UJBJUCQYJDIJEHQXZVG4 \
  | 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: b2da87f2890a682861234248785f353704f654c460d3d84348f99b3037c58666

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "258a6c0b3655e9834221768b4ddba4c2a37fe613c23a0e8607dec3188d5dbeae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-04-18T08:34:58Z",
    "title_canon_sha256": "ad00b49c667216fc15d79e34ae497f1e6d0d7811011ebcf697d9bb45eda58c3a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04693",
    "kind": "arxiv",
    "version": 1
  }
}