Pith Number

pith:R3IPBQKK

pith:2026:R3IPBQKKYAD4KTTQ54R6MGXVRR

not attested not anchored not stored refs pending

Algorithm to check Maximum Likelihood Estimate Existence for integrated PCA

Dmitri Shmelkin

arxiv:2605.28974 v1 · 2026-05-27 · math.ST · math.RT · stat.AP · stat.ME · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R3IPBQKKYAD4KTTQ54R6MGXVRR}

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	2026-05-29T01:04:42.117889Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ed0f0c14ac007c54e70ef23e61af58c5e472528c24dcc3d02c97bb1b002c1d8

Aliases

arxiv: 2605.28974 · arxiv_version: 2605.28974v1 · doi: 10.48550/arxiv.2605.28974 · pith_short_12: R3IPBQKKYAD4 · pith_short_16: R3IPBQKKYAD4KTTQ · pith_short_8: R3IPBQKK

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/R3IPBQKKYAD4KTTQ54R6MGXVRR \
  | 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: 8ed0f0c14ac007c54e70ef23e61af58c5e472528c24dcc3d02c97bb1b002c1d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3bc82d8a29a0d2180a2d8cb4d8d02034cbe1e090dc89e18a3467b1da8555cf4e",
    "cross_cats_sorted": [
      "math.RT",
      "stat.AP",
      "stat.ME",
      "stat.TH"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2026-05-27T18:23:10Z",
    "title_canon_sha256": "2e2fc3c9d79e0f983803602e70d2714e0ef027660580171a6a891d43a5ae9458"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.28974",
    "kind": "arxiv",
    "version": 1
  }
}