Pith Number

pith:KULTNAZB

pith:2016:KULTNAZBI3VH5CI2NWXGIV6NNN

not attested not anchored not stored refs pending

Projection Sparse Principal Component Analysis: an efficient least squares method

Giovanni Maria Merola

arxiv:1612.00939 v3 · 2016-12-03 · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KULTNAZBI3VH5CI2NWXGIV6NNN}

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	2026-07-05T00:10:12.907727Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

551736832146ea7e891a6dae6457cd6b4f383c9fb95cad97a054a73f14d1f47a

Aliases

arxiv: 1612.00939 · arxiv_version: 1612.00939v3 · doi: 10.48550/arxiv.1612.00939 · pith_short_12: KULTNAZBI3VH · pith_short_16: KULTNAZBI3VH5CI2 · pith_short_8: KULTNAZB

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/KULTNAZBI3VH5CI2NWXGIV6NNN \
  | 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: 551736832146ea7e891a6dae6457cd6b4f383c9fb95cad97a054a73f14d1f47a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "559fab42af87fe13fe71158029087c43629cf5173dd60508377ed503b93692fd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2016-12-03T08:42:34Z",
    "title_canon_sha256": "f3467cc6e840ef013e358d7a37e013ec991d0b7715b93f706c1d7c5f6ca40d61"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.00939",
    "kind": "arxiv",
    "version": 3
  }
}