Pith Number

pith:DBL7KNUT

pith:2013:DBL7KNUTL4M5AULYA3TLHDUIKX

not attested not anchored not stored refs pending

An exchange functional that tests the robustness of the plasmon description of the van der Waals density functional

Kristian Berland, Per Hyldgaard

arxiv:1309.1756 v1 · 2013-09-06 · cond-mat.mtrl-sci · cond-mat.mes-hall · cond-mat.soft · physics.chem-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{DBL7KNUTL4M5AULYA3TLHDUIKX}

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	2026-05-18T03:01:35.460585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1857f536935f19d0517806e6b38e8855fc8e8d00ba3caea774566518695ad8fd

Aliases

arxiv: 1309.1756 · arxiv_version: 1309.1756v1 · doi: 10.48550/arxiv.1309.1756 · pith_short_12: DBL7KNUTL4M5 · pith_short_16: DBL7KNUTL4M5AULY · pith_short_8: DBL7KNUT

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/DBL7KNUTL4M5AULYA3TLHDUIKX \
  | 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: 1857f536935f19d0517806e6b38e8855fc8e8d00ba3caea774566518695ad8fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab505cd833676b71c492d8a8f0c4768236f2d11612f0535b9d61e7ac0f3e2026",
    "cross_cats_sorted": [
      "cond-mat.mes-hall",
      "cond-mat.soft",
      "physics.chem-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2013-09-06T19:58:17Z",
    "title_canon_sha256": "4c26d400d6be07a52b90d344779e3ffe4039d117f81cf730715e7761b654fedd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.1756",
    "kind": "arxiv",
    "version": 1
  }
}