Pith Number

pith:F4LLMXQ4

pith:2011:F4LLMXQ42TEDTXJGGZIK35SOVT

not attested not anchored not stored refs pending

Energy Spectrum and Exact Cover in an Extended Quantum Ising Model

G. M. M. Wakker, M. Blaauboer, R. Ockhorst

arxiv:1103.4091 v2 · 2011-03-21 · quant-ph · cond-mat.mes-hall

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F4LLMXQ42TEDTXJGGZIK35SOVT}

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	2026-05-18T02:22:17.774230Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f16b65e1cd4c839dd263650adf64eacd7ced97c1815451f9b13309f33101ac9

Aliases

arxiv: 1103.4091 · arxiv_version: 1103.4091v2 · doi: 10.48550/arxiv.1103.4091 · pith_short_12: F4LLMXQ42TED · pith_short_16: F4LLMXQ42TEDTXJG · pith_short_8: F4LLMXQ4

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/F4LLMXQ42TEDTXJGGZIK35SOVT \
  | 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: 2f16b65e1cd4c839dd263650adf64eacd7ced97c1815451f9b13309f33101ac9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef2d245263c64bdb5518c0049e66df2765635fc46cdbd4b581f86561cefabc5c",
    "cross_cats_sorted": [
      "cond-mat.mes-hall"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-03-21T17:37:03Z",
    "title_canon_sha256": "2a828dd617c850b9d19fd5cb87de03212f0e16f5ff647918710983d0e3244d4e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.4091",
    "kind": "arxiv",
    "version": 2
  }
}