Pith Number

pith:U2RYQBSN

pith:2010:U2RYQBSNYUMU3KQTL7GEEEN3Z2

not attested not anchored not stored refs pending

Linking a distance measure of entanglement to its convex roof

Alexander Streltsov, Dagmar Bru{\ss}, Hermann Kampermann

arxiv:1006.3077 v2 · 2010-06-15 · 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{U2RYQBSNYUMU3KQTL7GEEEN3Z2}

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.

Cited by

1 paper in Pith

Estimating the best separable approximation of non-pure spin-squeezed states

Receipt and verification

First computed	2026-05-18T04:34:01.384885Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6a388064dc5194daa135fcc4211bbcea9e3b971922b0dfe053080460363004f

Aliases

arxiv: 1006.3077 · arxiv_version: 1006.3077v2 · doi: 10.48550/arxiv.1006.3077 · pith_short_12: U2RYQBSNYUMU · pith_short_16: U2RYQBSNYUMU3KQT · pith_short_8: U2RYQBSN

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/U2RYQBSNYUMU3KQTL7GEEEN3Z2 \
  | 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: a6a388064dc5194daa135fcc4211bbcea9e3b971922b0dfe053080460363004f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "96203e9e153347c39b55ac0360bc8fb6d18b75f42c25d16f9f173d4a9f61402c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2010-06-15T20:00:08Z",
    "title_canon_sha256": "e578eb670ec03a354b78e488fdf64e195d89c7306daed9921fdad58e0ccafcc2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1006.3077",
    "kind": "arxiv",
    "version": 2
  }
}