Pith Number

pith:2WWIUGYT

pith:2021:2WWIUGYT5TMDFZRYFIFR7ILDAU

not attested not anchored not stored refs pending

Learning the exchange-correlation functional from nature with fully differentiable density functional theory

Muhammad F. Kasim, Sam M. Vinko

arxiv:2102.04229 v4 · 2021-02-08 · physics.chem-ph · cs.LG · 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{2WWIUGYT5TMDFZRYFIFR7ILDAU}

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	2026-07-05T03:16:09.454855Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5ac8a1b13ecd832e6382a0b1fa1630501afad179aed8a31d97e62848630a81b

Aliases

arxiv: 2102.04229 · arxiv_version: 2102.04229v4 · doi: 10.48550/arxiv.2102.04229 · pith_short_12: 2WWIUGYT5TMD · pith_short_16: 2WWIUGYT5TMDFZRY · pith_short_8: 2WWIUGYT

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/2WWIUGYT5TMDFZRYFIFR7ILDAU \
  | 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: d5ac8a1b13ecd832e6382a0b1fa1630501afad179aed8a31d97e62848630a81b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "932c384e1d24a4b391ed46f94a01f64b2e576da631267407ccc360cc9b22a2c1",
    "cross_cats_sorted": [
      "cs.LG",
      "physics.comp-ph"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2021-02-08T14:25:10Z",
    "title_canon_sha256": "e1d710c6b796ffb955aae2be58c2b6ab8fe38442df23e48a3254884c6083e431"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.04229",
    "kind": "arxiv",
    "version": 4
  }
}