Pith Number

pith:W2BS3V4Q

pith:2016:W2BS3V4QT65V7PLGM737AV2UHT

not attested not anchored not stored refs pending

Trigonometric Interpolation and Quadrature in Perturbed Points

Anthony P. Austin, Lloyd N. Trefethen

arxiv:1612.04018 v1 · 2016-12-13 · 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{W2BS3V4QT65V7PLGM737AV2UHT}

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	2026-05-18T00:55:05.819995Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6832dd7909fbb5fbd6667f7f057543ccd1f50bf95b959996b533235a885cf85

Aliases

arxiv: 1612.04018 · arxiv_version: 1612.04018v1 · doi: 10.48550/arxiv.1612.04018 · pith_short_12: W2BS3V4QT65V · pith_short_16: W2BS3V4QT65V7PLG · pith_short_8: W2BS3V4Q

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/W2BS3V4QT65V7PLGM737AV2UHT \
  | 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: b6832dd7909fbb5fbd6667f7f057543ccd1f50bf95b959996b533235a885cf85

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea925c8ddd151c2dbfffb8b9ef9e1ac20880308c5bdf81fd1401d715d264b41c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-12-13T03:53:17Z",
    "title_canon_sha256": "2d5d5d24c4464786712621fdd9116ea7df2a9270856b7ae38057c5d2ceac5adc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.04018",
    "kind": "arxiv",
    "version": 1
  }
}