Pith Number

pith:7WLA6WHC

pith:2005:7WLA6WHCIGHEJ4ZJX3LS2EZPF4

not attested not anchored not stored refs pending

Fast and oblivious convolution quadrature

Achim Sch\"adle, Christian Lubich, Mar\'ia L\'opez-Fern\'andez

arxiv:math/0504461 v1 · 2005-04-22 · 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{7WLA6WHCIGHEJ4ZJX3LS2EZPF4}

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	2026-05-18T04:08:35.714888Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd960f58e2418e44f329bed72d132f2f22fb1cf26819782b545630fcbd3b3d3b

Aliases

arxiv: math/0504461 · arxiv_version: math/0504461v1 · doi: 10.48550/arxiv.math/0504461 · pith_short_12: 7WLA6WHCIGHE · pith_short_16: 7WLA6WHCIGHEJ4ZJ · pith_short_8: 7WLA6WHC

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/7WLA6WHCIGHEJ4ZJX3LS2EZPF4 \
  | 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: fd960f58e2418e44f329bed72d132f2f22fb1cf26819782b545630fcbd3b3d3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61c494aef1bf20094d173f74ec67cc8049c61efed6e8dcac810523559d1029eb",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.NA",
    "submitted_at": "2005-04-22T12:56:36Z",
    "title_canon_sha256": "26fea0a93f8eac6dfc60509e62f90b5073b03ac9e572e1e61116c47042e51d02"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0504461",
    "kind": "arxiv",
    "version": 1
  }
}