Pith Number

pith:372NIHP5

pith:2010:372NIHP5W2WUIEANDRCV4TM6HC

not attested not anchored not stored refs pending

Nonlinear Psychometric Thresholds for Physics and Mathematics

James Schombert (Dept. of Physics, Stephen D.H. Hsu (Dept. of Physics, Univ. of Oregon)

arxiv:1011.0663 v1 · 2010-11-02 · 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{372NIHP5W2WUIEANDRCV4TM6HC}

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	2026-05-18T04:37:21.131392Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dff4d41dfdb6ad44100d1c455e4d9e388f47a33411eafa712c781892dcff2323

Aliases

arxiv: 1011.0663 · arxiv_version: 1011.0663v1 · doi: 10.48550/arxiv.1011.0663 · pith_short_12: 372NIHP5W2WU · pith_short_16: 372NIHP5W2WUIEAN · pith_short_8: 372NIHP5

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/372NIHP5W2WUIEANDRCV4TM6HC \
  | 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: dff4d41dfdb6ad44100d1c455e4d9e388f47a33411eafa712c781892dcff2323

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef7a5364e8e3482e7a803f306675ec414717bc6ae62c4ae9846475943a7d65c5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2010-11-02T16:17:29Z",
    "title_canon_sha256": "63180dbce28d0aee8e3a3c80e05992b4c7de30167aa57b71b568b24b71c7bcb2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.0663",
    "kind": "arxiv",
    "version": 1
  }
}