Pith Number

pith:BY5GHPTT

pith:2009:BY5GHPTTXNB64L4I3XIX6R2UEC

not attested not anchored not stored refs pending

Ingredients of a Casimir analog computer

Alejandro W. Rodriguez, Alexander P. McCauley, John D. Joannopoulos, Steven G. Johnson

arxiv:0903.0599 v2 · 2009-03-03 · quant-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{BY5GHPTTXNB64L4I3XIX6R2UEC}

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	2026-05-18T04:31:12.191326Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0e3a63be73bb43ee2f88ddd17f475420aa454c43c2566f6c21668ec6dc4a7484

Aliases

arxiv: 0903.0599 · arxiv_version: 0903.0599v2 · doi: 10.48550/arxiv.0903.0599 · pith_short_12: BY5GHPTTXNB6 · pith_short_16: BY5GHPTTXNB64L4I · pith_short_8: BY5GHPTT

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/BY5GHPTTXNB64L4I3XIX6R2UEC \
  | 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: 0e3a63be73bb43ee2f88ddd17f475420aa454c43c2566f6c21668ec6dc4a7484

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6cbc19b01e3936e0bbb7bf8be051ba084e717d4c4857bd480fae3a4de3fb3260",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-03-03T19:18:00Z",
    "title_canon_sha256": "947a0e0eb15bd092c3796a711ad443afa18dfac9d1c8d07eaa48be1a2c5d4dd6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.0599",
    "kind": "arxiv",
    "version": 2
  }
}