Pith Number

pith:5ID7346G

pith:2014:5ID7346G4QDRAYY4IAJQWZQA2P

not attested not anchored not stored refs pending

Student Difficulties with the Dirac Delta Function

Bethany R. Wilcox, Steven J. Pollock

arxiv:1407.6311 v2 · 2014-07-23 · 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{5ID7346G4QDRAYY4IAJQWZQA2P}

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	2026-05-18T02:40:10.078770Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ea07fdf3c6e40710631c40130b6600d3c3bec8b32e4ec9252269f08e07f0a339

Aliases

arxiv: 1407.6311 · arxiv_version: 1407.6311v2 · doi: 10.48550/arxiv.1407.6311 · pith_short_12: 5ID7346G4QDR · pith_short_16: 5ID7346G4QDRAYY4 · pith_short_8: 5ID7346G

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/5ID7346G4QDRAYY4IAJQWZQA2P \
  | 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: ea07fdf3c6e40710631c40130b6600d3c3bec8b32e4ec9252269f08e07f0a339

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9cfac7cd206cccef34903597c5032fe953f4d46baa05a5b39f63239d98e68374",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2014-07-23T17:48:04Z",
    "title_canon_sha256": "847c67953be06655196bea11df3b6a31d6423b37af357ad7c1f8193f01b4033b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.6311",
    "kind": "arxiv",
    "version": 2
  }
}