Pith Number

pith:VQ64URGR

pith:2017:VQ64URGRIZACYOA74UNP2ZA4RU

not attested not anchored not stored refs pending

Fast Singular Value Shrinkage with Chebyshev Polynomial Approximation Based on Signal Sparsity

Keiichiro Shirai, Masaki Onuki, Shunsuke Ono, Yuichi Tanaka

arxiv:1705.07112 v1 · 2017-05-19 · cs.NA · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VQ64URGRIZACYOA74UNP2ZA4RU}

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	2026-05-18T00:30:04.284625Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac3dca44d146402c381fe51afd641c8d31bcf0f94f7b67f68c40f5744b92d4b0

Aliases

arxiv: 1705.07112 · arxiv_version: 1705.07112v1 · doi: 10.48550/arxiv.1705.07112 · pith_short_12: VQ64URGRIZAC · pith_short_16: VQ64URGRIZACYOA7 · pith_short_8: VQ64URGR

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/VQ64URGRIZACYOA74UNP2ZA4RU \
  | 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: ac3dca44d146402c381fe51afd641c8d31bcf0f94f7b67f68c40f5744b92d4b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc908c98e5ea3522a8b72b8e6c04e676242311f9d75dd09bc8b1fc05a9b98372",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2017-05-19T17:55:58Z",
    "title_canon_sha256": "610d94263a1610fa3ac2337649e53b1d3f949f6d7cfa15fa3e4cfb86f63f4d21"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.07112",
    "kind": "arxiv",
    "version": 1
  }
}