Pith Number

pith:PTEQAWXG

pith:2019:PTEQAWXGOBOMPOIKVRJ2Z2CHWL

not attested not anchored not stored refs pending

A variational lower bound on the ground state of a many-body system and the squaring parametrization of density matrices

F. Uskov, O. Lychkovskiy

arxiv:1902.09246 v1 · 2019-02-25 · 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{PTEQAWXGOBOMPOIKVRJ2Z2CHWL}

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	2026-05-17T23:47:25.929296Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7cc9005ae6705cc7b90aac53ace847b2fe789d96a8420893cae01bfebc08e935

Aliases

arxiv: 1902.09246 · arxiv_version: 1902.09246v1 · doi: 10.48550/arxiv.1902.09246 · pith_short_12: PTEQAWXGOBOM · pith_short_16: PTEQAWXGOBOMPOIK · pith_short_8: PTEQAWXG

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/PTEQAWXGOBOMPOIKVRJ2Z2CHWL \
  | 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: 7cc9005ae6705cc7b90aac53ace847b2fe789d96a8420893cae01bfebc08e935

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c94abb7a265eb6eafe3be66167437ce5cfe220b3f642a8241834d994fc57924",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-02-25T13:12:44Z",
    "title_canon_sha256": "df1ca19b4268375fb5fa02757a11b841bca035ca9b7ce0a242ed937c856a477f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.09246",
    "kind": "arxiv",
    "version": 1
  }
}