Pith Number

pith:X4G4DWU4

pith:2012:X4G4DWU4IRGJX2DNISDPJT3BFM

not attested not anchored not stored refs pending

Image method in the calculation of the van der Waals force between an atom and a conducting surface

C. Farina, C. Sigaud, Reinaldo de Melo e Souza, W.J.M. Kort-Kamp

arxiv:1204.2858 v1 · 2012-04-13 · 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{X4G4DWU4IRGJX2DNISDPJT3BFM}

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	2026-05-18T01:10:41.552683Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf0dc1da9c444c9be86d4486f4cf612b1b534c0ecbc5fd3468fed7029ab039b5

Aliases

arxiv: 1204.2858 · arxiv_version: 1204.2858v1 · doi: 10.48550/arxiv.1204.2858 · pith_short_12: X4G4DWU4IRGJ · pith_short_16: X4G4DWU4IRGJX2DN · pith_short_8: X4G4DWU4

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/X4G4DWU4IRGJX2DNISDPJT3BFM \
  | 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: bf0dc1da9c444c9be86d4486f4cf612b1b534c0ecbc5fd3468fed7029ab039b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4259e094804243933c43075f5071b52ae4148453de6ec5b9a1df8d6ae86b00e8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-04-13T00:18:25Z",
    "title_canon_sha256": "74c913a683302ef454f189d903af123243f113188be1fb2fb27b303a2ff6b5cc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.2858",
    "kind": "arxiv",
    "version": 1
  }
}