Pith Number

pith:VACKMUYX

pith:2018:VACKMUYXJXPNONKWHSXX6F5OR2

not attested not anchored not stored refs pending

Constrained Least Squares for Extended Complex Factor Analysis

Ahmad Mouri Sardarabadi, Alle-Jan van der Veen, L.V.E. Koopmans

arxiv:1804.00430 v1 · 2018-04-02 · stat.CO · astro-ph.IM · cs.SY · math.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VACKMUYXJXPNONKWHSXX6F5OR2}

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	2026-05-18T00:19:37.195389Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a804a653174dded735563caf7f17ae8ebf334a03f851b213fe4b487ae2185810

Aliases

arxiv: 1804.00430 · arxiv_version: 1804.00430v1 · doi: 10.48550/arxiv.1804.00430 · pith_short_12: VACKMUYXJXPN · pith_short_16: VACKMUYXJXPNONKW · pith_short_8: VACKMUYX

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/VACKMUYXJXPNONKWHSXX6F5OR2 \
  | 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: a804a653174dded735563caf7f17ae8ebf334a03f851b213fe4b487ae2185810

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a3d8151d6bacc62d5f7ee0756e448fdfedaa76ba56ae13db27ed156868ce18ab",
    "cross_cats_sorted": [
      "astro-ph.IM",
      "cs.SY",
      "math.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.CO",
    "submitted_at": "2018-04-02T08:35:23Z",
    "title_canon_sha256": "976a1b199d5762c8c3bfcf2567f892c8ad4780f95fa12c67c2304da54aa31f98"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.00430",
    "kind": "arxiv",
    "version": 1
  }
}