Pith Number

pith:C4PXR7NS

pith:2017:C4PXR7NSYGFV3FB3YGHIREJPUG

not attested not anchored not stored refs pending

Fast Poisson solvers for spectral methods

Alex Townsend, Daniel Fortunato

arxiv:1710.11259 v1 · 2017-10-30 · 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{C4PXR7NSYGFV3FB3YGHIREJPUG}

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	2026-05-18T00:31:44.437565Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

171f78fdb2c18b5d943bc18e88912fa1910c45f24630dc2fff325c0f28a25794

Aliases

arxiv: 1710.11259 · arxiv_version: 1710.11259v1 · doi: 10.48550/arxiv.1710.11259 · pith_short_12: C4PXR7NSYGFV · pith_short_16: C4PXR7NSYGFV3FB3 · pith_short_8: C4PXR7NS

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/C4PXR7NSYGFV3FB3YGHIREJPUG \
  | 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: 171f78fdb2c18b5d943bc18e88912fa1910c45f24630dc2fff325c0f28a25794

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6ab898af0198792d87c24b4f786983b4d7b4954a1daac539df48eca3b122829",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-10-30T22:06:33Z",
    "title_canon_sha256": "fa8a3247c07d32b5c9c180c69bd7e81b89a2d834dff6afd7a1b780f8e4b1ab4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.11259",
    "kind": "arxiv",
    "version": 1
  }
}