Pith Number

pith:MXUNVEEM

pith:2018:MXUNVEEMHY5FVJRWCVSGDJJ3BZ

not attested not anchored not stored refs pending

Spectrum-Revealing Cholesky Factorization for Kernel Methods

Jianwei Xiao, Ming Gu

arxiv:1804.05158 v1 · 2018-04-14 · 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{MXUNVEEMHY5FVJRWCVSGDJJ3BZ}

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	2026-05-18T00:18:30.442851Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

65e8da908c3e3a5aa636156461a53b0e5f96f2214fd8ed9e4fbd1275294aa980

Aliases

arxiv: 1804.05158 · arxiv_version: 1804.05158v1 · doi: 10.48550/arxiv.1804.05158 · pith_short_12: MXUNVEEMHY5F · pith_short_16: MXUNVEEMHY5FVJRW · pith_short_8: MXUNVEEM

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/MXUNVEEMHY5FVJRWCVSGDJJ3BZ \
  | 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: 65e8da908c3e3a5aa636156461a53b0e5f96f2214fd8ed9e4fbd1275294aa980

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6c7c35f38e47297eb28934c0ede004da5acd162aa2cf30dfd1452b67cd735f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-04-14T03:18:11Z",
    "title_canon_sha256": "6a4f0768240ad08fb4a3f94095f6b11e3194b47f0b981fbdd958d21bd602e088"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.05158",
    "kind": "arxiv",
    "version": 1
  }
}