Pith Number

pith:S2NGZ2QR

pith:2015:S2NGZ2QRYLNQWKU7MDWD7WJKJR

not attested not anchored not stored refs pending

Sparsified Cholesky Solvers for SDD linear systems

Daniel A. Spielman, Richard Peng, Yin Tat Lee

arxiv:1506.08204 v2 · 2015-06-26 · 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{S2NGZ2QRYLNQWKU7MDWD7WJKJR}

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

Flows in Almost Linear Time via Adaptive Preconditioning

Receipt and verification

First computed	2026-05-18T01:35:22.090126Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

969a6cea11c2db0b2a9f60ec3fd92a4c75451b78e9b2aa91c1dcf0cafa4090f7

Aliases

arxiv: 1506.08204 · arxiv_version: 1506.08204v2 · doi: 10.48550/arxiv.1506.08204 · pith_short_12: S2NGZ2QRYLNQ · pith_short_16: S2NGZ2QRYLNQWKU7 · pith_short_8: S2NGZ2QR

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/S2NGZ2QRYLNQWKU7MDWD7WJKJR \
  | 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: 969a6cea11c2db0b2a9f60ec3fd92a4c75451b78e9b2aa91c1dcf0cafa4090f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5208d043c0a01150cc0501fbf09f3c96bc86a21b1820577e64b498275e9af672",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-06-26T20:00:41Z",
    "title_canon_sha256": "0fdaff71e52044d4e73eec179d4fa1fbea7e8e1a3fdaeb8b60710f4c66246366"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.08204",
    "kind": "arxiv",
    "version": 2
  }
}