Pith Number

pith:LUQZJTII

pith:2019:LUQZJTII5LCHWM6HPFJY4B2R4S

not attested not anchored not stored refs pending

State-of-The-Art Sparse Direct Solvers

Kiran Gullapalli, Matthias Bollh\"ofer, Olaf Schenk, Radim Janal\'ik, Steve Hamm

arxiv:1907.05309 v1 · 2019-07-11 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LUQZJTII5LCHWM6HPFJY4B2R4S}

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	2026-05-17T23:40:50.814132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5d2194cd08eac47b33c779538e0751e4a4bdfccf67cd0fef830f8f3499d1d844

Aliases

arxiv: 1907.05309 · arxiv_version: 1907.05309v1 · doi: 10.48550/arxiv.1907.05309 · pith_short_12: LUQZJTII5LCH · pith_short_16: LUQZJTII5LCHWM6H · pith_short_8: LUQZJTII

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/LUQZJTII5LCHWM6HPFJY4B2R4S \
  | 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: 5d2194cd08eac47b33c779538e0751e4a4bdfccf67cd0fef830f8f3499d1d844

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1a1ac547bd1ca81ae9b5a51762dd1e5f829ce5e21448adab48e661d5fd5dd5f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-07-11T15:36:41Z",
    "title_canon_sha256": "62be460dd1006f22a09130d1b148d181c82153862dcf9dd3b1f169a331cb2c02"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.05309",
    "kind": "arxiv",
    "version": 1
  }
}