Pith Number

pith:NDIFAANC

pith:2011:NDIFAANCPCZ7JNT6WFJEVDREEC

not attested not anchored not stored refs pending

High-accuracy ab-initio quantum chemistry by means of an SU(2) x U(1) invariant matrix product state Ansatz: the static second hyperpolarizability

Dimitri Van Neck, Paul W. Ayers, Peter A. Limacher, Sebastian Wouters

arxiv:1111.5701 v1 · 2011-11-24 · cond-mat.str-el · 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{NDIFAANCPCZ7JNT6WFJEVDREEC}

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	2026-05-18T04:07:42.533099Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68d05001a278b3f4b67eb1524a8e2420b34f69cc0f9a9dbde4fbff6da8b1585a

Aliases

arxiv: 1111.5701 · arxiv_version: 1111.5701v1 · doi: 10.48550/arxiv.1111.5701 · pith_short_12: NDIFAANCPCZ7 · pith_short_16: NDIFAANCPCZ7JNT6 · pith_short_8: NDIFAANC

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/NDIFAANCPCZ7JNT6WFJEVDREEC \
  | 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: 68d05001a278b3f4b67eb1524a8e2420b34f69cc0f9a9dbde4fbff6da8b1585a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1b7f77285f6749f09330c592cddbda8d4acbe7b991360e17b63b1a87d5a8438",
    "cross_cats_sorted": [
      "physics.chem-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.str-el",
    "submitted_at": "2011-11-24T09:12:05Z",
    "title_canon_sha256": "87f41ba35150b1bcca79c2ee8e6a964525d768e7ef8a9626b0adb7db19dee385"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.5701",
    "kind": "arxiv",
    "version": 1
  }
}