Pith Number

pith:MV7GYESN

pith:2013:MV7GYESNSGPZYD6QZWBPAIU65O

not attested not anchored not stored refs pending

Oersted Lecture 2013: How should we think about how our students think?

Edward F. Redish

arxiv:1308.3911 v2 · 2013-08-19 · 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{MV7GYESNSGPZYD6QZWBPAIU65O}

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	2026-05-18T02:51:08.461032Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

657e6c124d919f9c0fd0cd82f0229eebb0c18901cbf2d779a2ee26b75eff4757

Aliases

arxiv: 1308.3911 · arxiv_version: 1308.3911v2 · doi: 10.48550/arxiv.1308.3911 · pith_short_12: MV7GYESNSGPZ · pith_short_16: MV7GYESNSGPZYD6Q · pith_short_8: MV7GYESN

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/MV7GYESNSGPZYD6QZWBPAIU65O \
  | 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: 657e6c124d919f9c0fd0cd82f0229eebb0c18901cbf2d779a2ee26b75eff4757

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d653a3f3f5481cf1634f385976b584f6008ba6341f9a95fcb0a870d27152bf35",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2013-08-19T02:05:44Z",
    "title_canon_sha256": "8eb4fdb802598baa96ca797d0e74ed2d018ad61943f3b8231df6a3bfae50e60a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.3911",
    "kind": "arxiv",
    "version": 2
  }
}