Pith Number

pith:C4LDVTK6

pith:2013:C4LDVTK6UPS56ITUDMT4GZ2Q4E

not attested not anchored not stored refs pending

Gradient type optimization methods for electronic structure calculations

Aihui Zhou, Jinwei Zhu, Xin Zhang, Zaiwen Wen

arxiv:1308.2864 v1 · 2013-08-13 · 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{C4LDVTK6UPS56ITUDMT4GZ2Q4E}

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	2026-05-18T03:15:58.328161Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17163acd5ea3e5df22741b27c36750e1224ec690be3ea5b80113e326cd2e00e4

Aliases

arxiv: 1308.2864 · arxiv_version: 1308.2864v1 · doi: 10.48550/arxiv.1308.2864 · pith_short_12: C4LDVTK6UPS5 · pith_short_16: C4LDVTK6UPS56ITU · pith_short_8: C4LDVTK6

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/C4LDVTK6UPS56ITUDMT4GZ2Q4E \
  | 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: 17163acd5ea3e5df22741b27c36750e1224ec690be3ea5b80113e326cd2e00e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "548618b9e6e2426e7c4c53b202433bb6dfd933d0a8db71dfef4049a70d55eef9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2013-08-13T13:31:48Z",
    "title_canon_sha256": "c0c80d43346dbc0a0dd7365ef239d34e608cfe7fc0ebe7835ed6b7e26ee2f1f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.2864",
    "kind": "arxiv",
    "version": 1
  }
}