Pith Number

pith:TACUPVQX

pith:2014:TACUPVQXS23DKWBGFHTNRBO3A5

not attested not anchored not stored refs pending

A Sparse SCF algorithm and its parallel implementation: Application to DFTB

Anthony Scemama, Mathias Rapacioli, Nicolas Renon

arxiv:1402.2880 v1 · 2014-02-12 · physics.chem-ph · cs.DC · 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{TACUPVQXS23DKWBGFHTNRBO3A5}

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	2026-05-18T01:10:41.480523Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

980547d61796b635582629e6d885db07488e350b72a68624a827535ba5c87e13

Aliases

arxiv: 1402.2880 · arxiv_version: 1402.2880v1 · doi: 10.48550/arxiv.1402.2880 · pith_short_12: TACUPVQXS23D · pith_short_16: TACUPVQXS23DKWBG · pith_short_8: TACUPVQX

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/TACUPVQXS23DKWBGFHTNRBO3A5 \
  | 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: 980547d61796b635582629e6d885db07488e350b72a68624a827535ba5c87e13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e3dc280cc42a1036dd6a0ad2842f356727636a315f56179766473bb3785a6fe",
    "cross_cats_sorted": [
      "cs.DC",
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2014-02-12T16:27:00Z",
    "title_canon_sha256": "247db75acb3a27d5fa316b2b0331810927788f7f4806532f10645bf93679c669"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.2880",
    "kind": "arxiv",
    "version": 1
  }
}