Pith Number

pith:B44GRPXU

pith:2018:B44GRPXUBN7CNOBOOKJHLOMC5B

not attested not anchored not stored refs pending

Fast Algorithms for Displacement and Low-Rank Structured Matrices

Abhejit Rajagopal, Nithin Govindarajan, Shivkumar Chandrasekaran

arxiv:1807.03437 v1 · 2018-07-10 · 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{B44GRPXUBN7CNOBOOKJHLOMC5B}

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	2026-05-18T00:10:09.853360Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f3868bef40b7e26b82e729275b982e859c5dd2f526c3382bff95fc1849b7eae

Aliases

arxiv: 1807.03437 · arxiv_version: 1807.03437v1 · doi: 10.48550/arxiv.1807.03437 · pith_short_12: B44GRPXUBN7C · pith_short_16: B44GRPXUBN7CNOBO · pith_short_8: B44GRPXU

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/B44GRPXUBN7CNOBOOKJHLOMC5B \
  | 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: 0f3868bef40b7e26b82e729275b982e859c5dd2f526c3382bff95fc1849b7eae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3ebfe4a562e920d1e31081bdab2f3406a9373e3de0eac6acfde9b709d69b5d0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-07-10T01:23:40Z",
    "title_canon_sha256": "ef2fc27e256ff220b917e7af9f517f507a3c2300d3811d5b747d281feea3213a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.03437",
    "kind": "arxiv",
    "version": 1
  }
}