Pith Number

pith:EQLKF3L6

pith:2018:EQLKF3L6HZGYDPE3ESC7EEKSCS

not attested not anchored not stored refs pending

Computation of the Maximum Likelihood estimator in low-rank Factor Analysis

Koulik Khamaru, Rahul Mazumder

arxiv:1801.05935 v1 · 2018-01-18 · math.OC · stat.CO · 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{EQLKF3L6HZGYDPE3ESC7EEKSCS}

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	2026-05-18T00:25:36.086269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2416a2ed7e3e4d81bc9b2485f2115214b5ed710151328a07bb8f7bd46b0731b7

Aliases

arxiv: 1801.05935 · arxiv_version: 1801.05935v1 · doi: 10.48550/arxiv.1801.05935 · pith_short_12: EQLKF3L6HZGY · pith_short_16: EQLKF3L6HZGYDPE3 · pith_short_8: EQLKF3L6

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/EQLKF3L6HZGYDPE3ESC7EEKSCS \
  | 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: 2416a2ed7e3e4d81bc9b2485f2115214b5ed710151328a07bb8f7bd46b0731b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16dba56988a53182995f4f6d55eb87ce48ebb46f913b25ccc03b71525f2a6d54",
    "cross_cats_sorted": [
      "stat.CO",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-01-18T04:50:42Z",
    "title_canon_sha256": "a08a6d0ddb537efeb355d87eba3823a01ea16973afb4fca6678d21f9d72cdaab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.05935",
    "kind": "arxiv",
    "version": 1
  }
}