Pith Number

pith:ESIZ7HOE

pith:2018:ESIZ7HOEIP5GANTCEETZ6XQYXG

not attested not anchored not stored refs pending

Sufficient and Necessary Conditions for the Identifiability of the $Q$-matrix

Gongjun Xu, Yuqi Gu

arxiv:1810.03819 v2 · 2018-10-09 · 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{ESIZ7HOEIP5GANTCEETZ6XQYXG}

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	2026-05-17T23:49:11.429601Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24919f9dc443fa60366221279f5e18b9b4a419eb75b641c60d1cbde6c759c1d1

Aliases

arxiv: 1810.03819 · arxiv_version: 1810.03819v2 · doi: 10.48550/arxiv.1810.03819 · pith_short_12: ESIZ7HOEIP5G · pith_short_16: ESIZ7HOEIP5GANTC · pith_short_8: ESIZ7HOE

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/ESIZ7HOEIP5GANTCEETZ6XQYXG \
  | 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: 24919f9dc443fa60366221279f5e18b9b4a419eb75b641c60d1cbde6c759c1d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16ad2be97d6545317f369d0e36a5d37154e6e1f9fc559c97524656f41d0c84b5",
    "cross_cats_sorted": [
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2018-10-09T05:28:27Z",
    "title_canon_sha256": "6162f0c4939725c439c1fccd657abe191116666c6f9e04ca4cfcdd56f2fffc8b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.03819",
    "kind": "arxiv",
    "version": 2
  }
}