Pith Number

pith:HKLS7Y2I

pith:2020:HKLS7Y2IBWBH3NTZQ2S6IJ6NRF

not attested not anchored not stored refs pending

An Adaptation for Iterative Structured Matrix Completion

Deanna Needell, Henry Adams, Lara Kassab

arxiv:2002.02041 v3 · 2020-02-05 · math.NA · cs.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{HKLS7Y2IBWBH3NTZQ2S6IJ6NRF}

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	2026-07-05T02:40:26.628559Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a972fe3480d827db67986a5e427cd8964d0e2c311f8a4b686d32ff8f23d0726

Aliases

arxiv: 2002.02041 · arxiv_version: 2002.02041v3 · doi: 10.48550/arxiv.2002.02041 · pith_short_12: HKLS7Y2IBWBH · pith_short_16: HKLS7Y2IBWBH3NTZ · pith_short_8: HKLS7Y2I

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/HKLS7Y2IBWBH3NTZQ2S6IJ6NRF \
  | 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: 3a972fe3480d827db67986a5e427cd8964d0e2c311f8a4b686d32ff8f23d0726

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "031b869e443ce5b842cf94625f5c435f711b6ecbb65a16b0d729be9d7ab33bc8",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2020-02-05T23:57:26Z",
    "title_canon_sha256": "fca062f3f85275ac4188d915f847b798ff541c6a1f4b64396491a96a91824bd1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.02041",
    "kind": "arxiv",
    "version": 3
  }
}