Pith Number

pith:ZQO3HGIZ

pith:2008:ZQO3HGIZDEROACIIS6FIDNCBHX

not attested not anchored not stored refs pending

Efficient implementation of a van der Waals density functional: Application to double-wall carbon nanotubes

Guillermo Roman-Perez, Jose M. Soler

arxiv:0812.0244 v1 · 2008-12-01 · 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{ZQO3HGIZDEROACIIS6FIDNCBHX}

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	2026-05-18T03:24:08.918457Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc1db399191922e00908978a81b4413de3e9f58653a4fa9f285b0b095517feec

Aliases

arxiv: 0812.0244 · arxiv_version: 0812.0244v1 · doi: 10.48550/arxiv.0812.0244 · pith_short_12: ZQO3HGIZDERO · pith_short_16: ZQO3HGIZDEROACII · pith_short_8: ZQO3HGIZ

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/ZQO3HGIZDEROACIIS6FIDNCBHX \
  | 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: cc1db399191922e00908978a81b4413de3e9f58653a4fa9f285b0b095517feec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88b99699e78a47437dd984e951a521549de23c4b1bdef04d978682911f9b33d1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2008-12-01T09:22:57Z",
    "title_canon_sha256": "b77b11fd2582f2c93005ef578201dde6601c0c47afd56ac255cac75c11ef8134"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.0244",
    "kind": "arxiv",
    "version": 1
  }
}