Pith Number

pith:74MSAVCZ

pith:2014:74MSAVCZKBMX6RK5JXPCBDEPOB

not attested not anchored not stored refs pending

van der Waals forces in density functional theory: The vdW-DF method

Bengt I. Lundqvist, Elsebeth Schr\"oder, Kristian Berland, Kyuho Lee, Per Hyldgaard, T. Thonhauser, Valentino R. Cooper

arxiv:1412.6827 v1 · 2014-12-21 · cond-mat.mtrl-sci · cond-mat.mes-hall · cond-mat.soft · physics.chem-ph · physics.comp-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{74MSAVCZKBMX6RK5JXPCBDEPOB}

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	2026-05-18T02:07:26.666535Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff1920545950597f455d4dde208c8f70768016297ebe6c224b449ad8edf4420b

Aliases

arxiv: 1412.6827 · arxiv_version: 1412.6827v1 · doi: 10.48550/arxiv.1412.6827 · pith_short_12: 74MSAVCZKBMX · pith_short_16: 74MSAVCZKBMX6RK5 · pith_short_8: 74MSAVCZ

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/74MSAVCZKBMX6RK5JXPCBDEPOB \
  | 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: ff1920545950597f455d4dde208c8f70768016297ebe6c224b449ad8edf4420b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72f276a187c056d9addc4983d809fa6389f1e96ee6b98da66e1c9937c9bd4973",
    "cross_cats_sorted": [
      "cond-mat.mes-hall",
      "cond-mat.soft",
      "physics.chem-ph",
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2014-12-21T19:56:50Z",
    "title_canon_sha256": "cc357b133ca91296d340bcb9c4c5ec55d854d8f01f7decec72a85a24422ff3c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.6827",
    "kind": "arxiv",
    "version": 1
  }
}