Pith Number

pith:4NPFMGGW

pith:2015:4NPFMGGWZWDVBPFNXNMD3RUISG

not attested not anchored not stored refs pending

Real-space grids and the Octopus code as tools for the development of new simulation approaches for electronic systems

Al\'an Aspuru-Guzik, Alberto Castro, Alejandro Varas, \'Angel Rubio, Ask Hjorth Larsen, David A. Strubbe, Fernando Nogueira, Iris Theophilou, Joseba Alberdi-Rodriguez, Lorenzo Stella, Matthieu Verstraete, Micael J. T. Oliveira, Miguel A. L. Marques, Nicole Helbig, Umberto De Giovannini, Xavier Andrade

arxiv:1501.05654 v1 · 2015-01-22 · physics.chem-ph · cond-mat.other · 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{4NPFMGGWZWDVBPFNXNMD3RUISG}

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	2026-05-18T01:23:48.359027Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e35e5618d6cd8750bcadbb583dc68891a852d5056211bbfc620d28a400a512df

Aliases

arxiv: 1501.05654 · arxiv_version: 1501.05654v1 · doi: 10.48550/arxiv.1501.05654 · pith_short_12: 4NPFMGGWZWDV · pith_short_16: 4NPFMGGWZWDVBPFN · pith_short_8: 4NPFMGGW

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/4NPFMGGWZWDVBPFNXNMD3RUISG \
  | 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: e35e5618d6cd8750bcadbb583dc68891a852d5056211bbfc620d28a400a512df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae55f76506b293ff74b968214be7fd97827bd1f4a574cd0264e2ef21d53517c2",
    "cross_cats_sorted": [
      "cond-mat.other",
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2015-01-22T21:00:10Z",
    "title_canon_sha256": "6246e7022fa3460872488586b7429e1fc5844075e6e488f58f543206115211df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.05654",
    "kind": "arxiv",
    "version": 1
  }
}