Pith Number

pith:2AXBZYHD

pith:2015:2AXBZYHDYLDEGFAPU47GDXRGW7

not attested not anchored not stored refs pending

Cluster Analysis of Educational Data: an Example of Quantitative Study on the answers to an Open-Ended Questionnaire

Benedetto Di Paola, Claudio Fazio, Onofrio Rosario Battaglia

arxiv:1512.08998 v4 · 2015-12-30 · physics.ed-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2AXBZYHDYLDEGFAPU47GDXRGW7}

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	2026-05-18T00:37:57.666220Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d02e1ce0e3c2c643140fa73e61de26b7d3832c9b334116257c5c9c9dca40b971

Aliases

arxiv: 1512.08998 · arxiv_version: 1512.08998v4 · doi: 10.48550/arxiv.1512.08998 · pith_short_12: 2AXBZYHDYLDE · pith_short_16: 2AXBZYHDYLDEGFAP · pith_short_8: 2AXBZYHD

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/2AXBZYHDYLDEGFAPU47GDXRGW7 \
  | 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: d02e1ce0e3c2c643140fa73e61de26b7d3832c9b334116257c5c9c9dca40b971

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42a8912d833b4573b320c2613ac224e3e5113a438760761b9c027907438f5575",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2015-12-30T16:30:18Z",
    "title_canon_sha256": "01a17dc32c1673ebad36acb1e6e75805c0570bf6367a770e3cbe5ca6aef83c22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.08998",
    "kind": "arxiv",
    "version": 4
  }
}