Pith Number

pith:3XHZIVHN

pith:2018:3XHZIVHNFQZ7JWATYLURJA3GFI

not attested not anchored not stored refs pending

Series solution of Laplace problems

Lloyd N. Trefethen

arxiv:1803.00973 v1 · 2018-03-02 · 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{3XHZIVHNFQZ7JWATYLURJA3GFI}

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	2026-05-18T00:22:07.344523Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ddcf9454ed2c33f4d813c2e91483662a3eeafd1c77f7c38cf33ba805d0016cdb

Aliases

arxiv: 1803.00973 · arxiv_version: 1803.00973v1 · doi: 10.48550/arxiv.1803.00973 · pith_short_12: 3XHZIVHNFQZ7 · pith_short_16: 3XHZIVHNFQZ7JWAT · pith_short_8: 3XHZIVHN

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/3XHZIVHNFQZ7JWATYLURJA3GFI \
  | 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: ddcf9454ed2c33f4d813c2e91483662a3eeafd1c77f7c38cf33ba805d0016cdb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2da1b075a11da3adb277e8f21400b7bd4401a72acd1f3547c6df9b2be99dc977",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-03-02T18:06:06Z",
    "title_canon_sha256": "a6d6011e0e12b1ccc9f60367f362d2b80d5d62918a9e46630fd9834a97e60937"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.00973",
    "kind": "arxiv",
    "version": 1
  }
}