Pith Number

pith:X55ZRAZB

pith:2014:X55ZRAZBS2XK4G2XNNCTVV3KRQ

not attested not anchored not stored refs pending

The Inverse Fast Multipole Method

Eric Darve, Sivaram Ambikasaran

arxiv:1407.1572 v1 · 2014-07-07 · math.NA · cs.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{X55ZRAZBS2XK4G2XNNCTVV3KRQ}

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.

Cited by

1 paper in Pith

Parallel Sparse and Data-Sparse Factorization-based Linear Solvers

Receipt and verification

First computed	2026-05-18T02:48:11.025559Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf7b98832196aeae1b576b453ad76a8c2c9ac3d0cdca570035da716c99bdd63c

Aliases

arxiv: 1407.1572 · arxiv_version: 1407.1572v1 · doi: 10.48550/arxiv.1407.1572 · pith_short_12: X55ZRAZBS2XK · pith_short_16: X55ZRAZBS2XK4G2X · pith_short_8: X55ZRAZB

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/X55ZRAZBS2XK4G2XNNCTVV3KRQ \
  | 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: bf7b98832196aeae1b576b453ad76a8c2c9ac3d0cdca570035da716c99bdd63c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ecf8a38f303fa41fb06843789b4f8868bd4f0032b83ea4cbcb680ae5057ba80e",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-07-07T03:16:40Z",
    "title_canon_sha256": "075d9117f0ece86428b66b581c84e68435443a583745868a1799b68ac9a0fb4a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.1572",
    "kind": "arxiv",
    "version": 1
  }
}