Pith Number

pith:OR6V6IOP

pith:2022:OR6V6IOPXUTOHQJ7TODQFRPCEU

not attested not anchored not stored refs pending

Matrix Approximation with Side Information: When Column Sampling is Enough

Jeongmin Chae, Praneeth Narayanamurthy, Selin Bac, Shaama Mallikarjun Sharada, Urbashi Mitra

arxiv:2212.05469 v2 · 2022-12-11 · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OR6V6IOPXUTOHQJ7TODQFRPCEU}

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	2026-07-05T06:11:58.957931Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

747d5f21cfbd26e3c13f9b8702c5e2251b8cbd40f09824d631736ac05b5a1f4d

Aliases

arxiv: 2212.05469 · arxiv_version: 2212.05469v2 · doi: 10.48550/arxiv.2212.05469 · pith_short_12: OR6V6IOPXUTO · pith_short_16: OR6V6IOPXUTOHQJ7 · pith_short_8: OR6V6IOP

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/OR6V6IOPXUTOHQJ7TODQFRPCEU \
  | 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: 747d5f21cfbd26e3c13f9b8702c5e2251b8cbd40f09824d631736ac05b5a1f4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6adcea43498adc524dcda75545f62ee77b7af2ef8e86b9d5b82a36c2aa8b0fd",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2022-12-11T10:52:52Z",
    "title_canon_sha256": "863b68d8f64cc506307c9fee6644b462d6429da1263db7b417ef9f839bd0a41e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2212.05469",
    "kind": "arxiv",
    "version": 2
  }
}