Pith Number

pith:Z3MTSAVZ

pith:2015:Z3MTSAVZI6632FB4IFULJ3OK2C

not attested not anchored not stored refs pending

Measuring the impact of an instructional laboratory on the learning of introductory physics

Carl Wieman, N.G. Holmes

arxiv:1506.02969 v2 · 2015-06-09 · 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{Z3MTSAVZI6632FB4IFULJ3OK2C}

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	2026-05-18T00:06:44.152141Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ced93902b947bdbd143c4168b4edcad08a908ef74c74917ed7fe6088db84ad65

Aliases

arxiv: 1506.02969 · arxiv_version: 1506.02969v2 · doi: 10.48550/arxiv.1506.02969 · pith_short_12: Z3MTSAVZI663 · pith_short_16: Z3MTSAVZI6632FB4 · pith_short_8: Z3MTSAVZ

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/Z3MTSAVZI6632FB4IFULJ3OK2C \
  | 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: ced93902b947bdbd143c4168b4edcad08a908ef74c74917ed7fe6088db84ad65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f13c51feef1fb635e72addf25a6065e4b049b4309e76117dc1ab795708484882",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2015-06-09T15:55:27Z",
    "title_canon_sha256": "097303f377128954474ba8ae90e03135858ae7408d1f9200b6282a9610ef7089"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.02969",
    "kind": "arxiv",
    "version": 2
  }
}