Pith Number

pith:XVRVRD7F

pith:2007:XVRVRD7FRWGFHBLASMFH3EE7HF

not attested not anchored not stored refs pending

Practical scheme for non-postselection entanglement concentration using linear optical elements

Myung-Joong Hwang, Yoon-Ho Kim

arxiv:0708.0444 v1 · 2007-08-03 · 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{XVRVRD7FRWGFHBLASMFH3EE7HF}

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	2026-05-18T01:20:18.233245Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd63588fe58d8c538560930a7d909f39520b63410c1150a6d3866a68e0867c6b

Aliases

arxiv: 0708.0444 · arxiv_version: 0708.0444v1 · doi: 10.48550/arxiv.0708.0444 · pith_short_12: XVRVRD7FRWGF · pith_short_16: XVRVRD7FRWGFHBLA · pith_short_8: XVRVRD7F

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/XVRVRD7FRWGFHBLASMFH3EE7HF \
  | 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: bd63588fe58d8c538560930a7d909f39520b63410c1150a6d3866a68e0867c6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a50e07b23bb1d5f2aea5fce09d09ab6c0e0543085f487ba872330dbd06f8b5dd",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2007-08-03T01:56:21Z",
    "title_canon_sha256": "811c41d2b32f90b5f25da3a2ac921c30dc2a781d865b193a4e383a0454d4fd63"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0708.0444",
    "kind": "arxiv",
    "version": 1
  }
}