Pith Number

pith:CKNYMLUZ

pith:2020:CKNYMLUZUQZYRHSSF7IRFKSHNF

not attested not anchored not stored refs pending

Visualizing and Understanding Large-Scale Assessments in Mathematics through Dimensionality Reduction

Caio Azevedo, Esdras Medeiros, Jorge Lira, Romildo Silva

arxiv:2003.01864 v3 · 2020-03-04 · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CKNYMLUZUQZYRHSSF7IRFKSHNF}

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	2026-07-05T01:06:53.585428Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

129b862e99a433889e522fd112aa476956d46533252350858050ce5885d6c362

Aliases

arxiv: 2003.01864 · arxiv_version: 2003.01864v3 · doi: 10.48550/arxiv.2003.01864 · pith_short_12: CKNYMLUZUQZY · pith_short_16: CKNYMLUZUQZYRHSS · pith_short_8: CKNYMLUZ

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/CKNYMLUZUQZYRHSSF7IRFKSHNF \
  | 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: 129b862e99a433889e522fd112aa476956d46533252350858050ce5885d6c362

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9dd4ecd9a01d29e56fdd23ebb78591fccf047b5a69e311e49205a5709bfad3f1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2020-03-04T02:39:17Z",
    "title_canon_sha256": "ca6256464876ccae53e508cf4ce0575a6a9192f0e20bf3fb19d6af23fb27adc3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.01864",
    "kind": "arxiv",
    "version": 3
  }
}