Pith Number

pith:R3PQZ5SD

pith:2008:R3PQZ5SDLSC6VQU5LWS6XTEX43

not attested not anchored not stored refs pending

Learning of Content Knowledge and Development of Scientific Reasoning Ability: A Cross Culture Comparison

Jing Han, Jing Wang, Kai Fang, Lei Bao, Lijia Yang, Lili Cui, Lin Ding, Tianfang Cai, Ying Luo

arxiv:0807.2061 v1 · 2008-07-13 · 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{R3PQZ5SDLSC6VQU5LWS6XTEX43}

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	2026-05-18T02:15:45.217048Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8edf0cf6435c85eac29d5da5ebcc97e6c85360807ed16ca80b33846ab70ac3ba

Aliases

arxiv: 0807.2061 · arxiv_version: 0807.2061v1 · doi: 10.48550/arxiv.0807.2061 · pith_short_12: R3PQZ5SDLSC6 · pith_short_16: R3PQZ5SDLSC6VQU5 · pith_short_8: R3PQZ5SD

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/R3PQZ5SDLSC6VQU5LWS6XTEX43 \
  | 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: 8edf0cf6435c85eac29d5da5ebcc97e6c85360807ed16ca80b33846ab70ac3ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "11573cbd157602053e4e7e8883fc8c15c14c34cb80a91f9d487cf20e473a3a0b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2008-07-13T20:57:45Z",
    "title_canon_sha256": "37836c5a9e80023b908894c90290a777689d76461cbfab452439ebc273f6691d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0807.2061",
    "kind": "arxiv",
    "version": 1
  }
}