Pith Number

pith:NT7YUTTI

pith:2011:NT7YUTTI3DEJT7OGFMTQGO6MGU

not attested not anchored not stored refs pending

An alternative to the Baum-Welch recursions for hidden Markov models

Francesco Bartolucci

arxiv:1201.0277 v1 · 2011-12-31 · math.ST · 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{NT7YUTTI3DEJT7OGFMTQGO6MGU}

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	2026-05-18T04:05:25.560506Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cff8a4e68d8c899fdc62b27033bcc3504f379be9e9e4904466e2e3f1e858b50

Aliases

arxiv: 1201.0277 · arxiv_version: 1201.0277v1 · doi: 10.48550/arxiv.1201.0277 · pith_short_12: NT7YUTTI3DEJ · pith_short_16: NT7YUTTI3DEJT7OG · pith_short_8: NT7YUTTI

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/NT7YUTTI3DEJT7OGFMTQGO6MGU \
  | 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: 6cff8a4e68d8c899fdc62b27033bcc3504f379be9e9e4904466e2e3f1e858b50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d16b973d64549c4e859674638d8afd558b37ab1208b944c6309abc4a625673b0",
    "cross_cats_sorted": [
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2011-12-31T15:57:34Z",
    "title_canon_sha256": "4b037b92e9316b5d822e0b2eca54da10a36d9c0826c35bcaa23ad6062dc34d9d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.0277",
    "kind": "arxiv",
    "version": 1
  }
}