Pith Number

pith:NFLLXI7Q

pith:2012:NFLLXI7QWNTBII25RKMEKD4AJK

not attested not anchored not stored refs pending

Retardation turns the van der Waals attraction into Casimir repulsion already at 3 nm

Barry W. Ninham, Bo E. Sernelius, Iver Brevik, Mathias Bostr\"om

arxiv:1201.1136 v1 · 2012-01-05 · quant-ph · cond-mat.other

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NFLLXI7QWNTBII25RKMEKD4AJK}

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	2026-05-18T04:03:55.606297Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6956bba3f0b36614235d8a98450f804a999fe532fe95ced92a4e3e797087f1fc

Aliases

arxiv: 1201.1136 · arxiv_version: 1201.1136v1 · doi: 10.48550/arxiv.1201.1136 · pith_short_12: NFLLXI7QWNTB · pith_short_16: NFLLXI7QWNTBII25 · pith_short_8: NFLLXI7Q

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/NFLLXI7QWNTBII25RKMEKD4AJK \
  | 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: 6956bba3f0b36614235d8a98450f804a999fe532fe95ced92a4e3e797087f1fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e2893cb1646407263b23adb6dc4a73897c0318dc0e5a5ca7c7cd3e8fb6406860",
    "cross_cats_sorted": [
      "cond-mat.other"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-01-05T11:49:30Z",
    "title_canon_sha256": "0d7986cacd0547438b367216c298b845ea90e5e90f77bb0da912171545af763b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.1136",
    "kind": "arxiv",
    "version": 1
  }
}