Pith Number

pith:EQILFYDP

pith:2007:EQILFYDPYZKZZS2ATH76JAIAKW

not attested not anchored not stored refs pending

Van der Waals density functional: Self-consistent potential and the nature of the van der Waals bond

Aaron Puzder, David C. Langreth, Per Hyldgaard, Shen Li, T. Thonhauser, Valentino R. Cooper

arxiv:cond-mat/0703442 v1 · 2007-03-16 · cond-mat.mtrl-sci

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EQILFYDPYZKZZS2ATH76JAIAKW}

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	2026-05-18T04:08:54.478507Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2410b2e06fc6559ccb4099ffe4810055a4eccadddd2dd4c44d9abd4322ea4178

Aliases

arxiv: cond-mat/0703442 · arxiv_version: cond-mat/0703442v1 · doi: 10.48550/arxiv.cond-mat/0703442 · pith_short_12: EQILFYDPYZKZ · pith_short_16: EQILFYDPYZKZZS2A · pith_short_8: EQILFYDP

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/EQILFYDPYZKZZS2ATH76JAIAKW \
  | 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: 2410b2e06fc6559ccb4099ffe4810055a4eccadddd2dd4c44d9abd4322ea4178

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf949aea10fa895fd4250f0457a52dc86ffac1db1b96e4de126110f8fc1fbb45",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2007-03-16T16:24:01Z",
    "title_canon_sha256": "72a3fae5db6a9764a33f679ece127624a2f6870f607cbfe5349e0a648ab38cca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/0703442",
    "kind": "arxiv",
    "version": 1
  }
}