Pith Number

pith:YY5LMGF5

pith:2014:YY5LMGF5XT2DM7IQPZK3PW3MPM

not attested not anchored not stored refs pending

Fast symmetric factorization of hierarchical matrices with applications

Karan Raj Singh, Michael O'Neil, Sivaram Ambikasaran

arxiv:1405.0223 v2 · 2014-05-01 · math.NA · cs.NA · physics.flu-dyn · stat.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YY5LMGF5XT2DM7IQPZK3PW3MPM}

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	2026-05-18T00:53:45.653558Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c63ab618bdbcf4367d107e55b7db6c7b024a429d646767bed53eca9dd3862c4c

Aliases

arxiv: 1405.0223 · arxiv_version: 1405.0223v2 · doi: 10.48550/arxiv.1405.0223 · pith_short_12: YY5LMGF5XT2D · pith_short_16: YY5LMGF5XT2DM7IQ · pith_short_8: YY5LMGF5

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/YY5LMGF5XT2DM7IQPZK3PW3MPM \
  | 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: c63ab618bdbcf4367d107e55b7db6c7b024a429d646767bed53eca9dd3862c4c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8452215e9d539112a97d108f4668cdf16efe71c71fcba2a03a3b745cca9be375",
    "cross_cats_sorted": [
      "cs.NA",
      "physics.flu-dyn",
      "stat.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-05-01T17:18:17Z",
    "title_canon_sha256": "0842533d0d93f99b0625d5ac0066cb78d44ac3751f3544352612248b779ce153"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.0223",
    "kind": "arxiv",
    "version": 2
  }
}