Pith Number

pith:CRU5LJNA

pith:2005:CRU5LJNACIIAGLS2LW6Y6JWKBN

not attested not anchored not stored refs pending

The Decrease in Physics Enrollment

Samina S.Masood

arxiv:physics/0509206 v1 · 2005-09-23 · physics.soc-ph · 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{CRU5LJNACIIAGLS2LW6Y6JWKBN}

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	2026-05-18T03:17:25.271691Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1469d5a5a01210032e5a5dbd8f26ca0b4f8d502cc31cbaf198e7b5b5af0e3bd4

Aliases

arxiv: physics/0509206 · arxiv_version: physics/0509206v1 · doi: 10.48550/arxiv.physics/0509206 · pith_short_12: CRU5LJNACIIA · pith_short_16: CRU5LJNACIIAGLS2 · pith_short_8: CRU5LJNA

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/CRU5LJNACIIAGLS2LW6Y6JWKBN \
  | 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: 1469d5a5a01210032e5a5dbd8f26ca0b4f8d502cc31cbaf198e7b5b5af0e3bd4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e27ae88a5f85106e1f65f85ed6ccabc6fbf02784eda7093cdedef79dce40f4b",
    "cross_cats_sorted": [
      "physics.ed-ph"
    ],
    "license": "",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2005-09-23T21:25:38Z",
    "title_canon_sha256": "95ac3931df07b72de835a232ef0054deb6fd3fa6a07621ad70f5bae55ac4b5c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0509206",
    "kind": "arxiv",
    "version": 1
  }
}