Pith Number

pith:TDF2PTWJ

pith:2013:TDF2PTWJB5XZVTFV67APIRU2FN

not attested not anchored not stored refs pending

Missing Entries Matrix Approximation and Completion

Amir Averbuch, Gil Shabat, Yaniv Shmueli

arxiv:1302.6768 v2 · 2013-02-27 · math.NA · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TDF2PTWJB5XZVTFV67APIRU2FN}

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	2026-05-18T02:48:47.090959Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

98cba7cec90f6f9accb5f7c0f4469a2b774b8916df5e1abab0d2c72ed3df2100

Aliases

arxiv: 1302.6768 · arxiv_version: 1302.6768v2 · doi: 10.48550/arxiv.1302.6768 · pith_short_12: TDF2PTWJB5XZ · pith_short_16: TDF2PTWJB5XZVTFV · pith_short_8: TDF2PTWJ

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/TDF2PTWJB5XZVTFV67APIRU2FN \
  | 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: 98cba7cec90f6f9accb5f7c0f4469a2b774b8916df5e1abab0d2c72ed3df2100

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b822b4347f1495ac7f1999b0a9356c01d63c785317cddf760a91ed6c19da9da",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-02-27T13:47:45Z",
    "title_canon_sha256": "88d877ee646d55b606f4cbad2ee90f9a8ada504e9ca67c900fab9e71fd8ce134"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.6768",
    "kind": "arxiv",
    "version": 2
  }
}