Pith Number

pith:EPMLTMP3

pith:2011:EPMLTMP3FHE7IW2TDDH3CLMHGM

not attested not anchored not stored refs pending

Reduced density matrix and entanglement entropy of permutationally invariant quantum many-body systems

Mario Salerno, V. Popkov

arxiv:1112.6352 v1 · 2011-12-29 · cond-mat.stat-mech · quant-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{EPMLTMP3FHE7IW2TDDH3CLMHGM}

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	2026-05-18T01:58:59.761156Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23d8b9b1fb29c9f45b5318cfb12d87333a3b36bf95e925776fca7ad023f2c21c

Aliases

arxiv: 1112.6352 · arxiv_version: 1112.6352v1 · doi: 10.48550/arxiv.1112.6352 · pith_short_12: EPMLTMP3FHE7 · pith_short_16: EPMLTMP3FHE7IW2T · pith_short_8: EPMLTMP3

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/EPMLTMP3FHE7IW2TDDH3CLMHGM \
  | 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: 23d8b9b1fb29c9f45b5318cfb12d87333a3b36bf95e925776fca7ad023f2c21c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e65d0a492bb70c118e55ef7fa5a6335c647a2ca508018499e83232473ddfc47e",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.stat-mech",
    "submitted_at": "2011-12-29T17:16:28Z",
    "title_canon_sha256": "4bb3dd99dc83d2fb62424e5206daa8ceed21f52321d7975296b7106184f1a385"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.6352",
    "kind": "arxiv",
    "version": 1
  }
}