Pith Number

pith:EFIMSKOD

pith:2018:EFIMSKODJLKSJ7DQD5ZSSANPIF

not attested not anchored not stored refs pending

A Perturbative Density Matrix Renormalization Group Algorithm for Large Active Spaces

Garnet Kin-Lic Chan, Sheng Guo, Zhendong Li

arxiv:1803.07150 v2 · 2018-03-19 · physics.chem-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{EFIMSKODJLKSJ7DQD5ZSSANPIF}

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	2026-05-18T00:20:13.335145Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2150c929c34ad524fc701f732901af416a856367a44f7493b82846923bf53602

Aliases

arxiv: 1803.07150 · arxiv_version: 1803.07150v2 · doi: 10.48550/arxiv.1803.07150 · pith_short_12: EFIMSKODJLKS · pith_short_16: EFIMSKODJLKSJ7DQ · pith_short_8: EFIMSKOD

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/EFIMSKODJLKSJ7DQD5ZSSANPIF \
  | 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: 2150c929c34ad524fc701f732901af416a856367a44f7493b82846923bf53602

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "386aa44db34fd34e46eeddf468ba9de0dbc724a6f9d37943dd07225a72ec5d16",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2018-03-19T20:21:51Z",
    "title_canon_sha256": "72077b5b770dabc151ef54947903de7ef8a8c11487c725d606ff440947b3bb9d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.07150",
    "kind": "arxiv",
    "version": 2
  }
}