Pith Number

pith:USR4CVJ3

pith:2013:USR4CVJ3K52ZOTH64QNTY45VD7

not attested not anchored not stored refs pending

Entanglement measure using Wigner function: case of generalized vortex state formed by multiphoton subtraction

Abir Bandyopadhyay, Anindya Banerji, Ravindra P. Singh

arxiv:1304.2887 v5 · 2013-04-10 · quant-ph · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{USR4CVJ3K52ZOTH64QNTY45VD7}

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	2026-05-18T02:50:32.534705Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4a3c1553b5775974cfee41b3c73b51fcbbe11f5f24e04565c7aaa605c477c5a

Aliases

arxiv: 1304.2887 · arxiv_version: 1304.2887v5 · doi: 10.48550/arxiv.1304.2887 · pith_short_12: USR4CVJ3K52Z · pith_short_16: USR4CVJ3K52ZOTH6 · pith_short_8: USR4CVJ3

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/USR4CVJ3K52ZOTH64QNTY45VD7 \
  | 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: a4a3c1553b5775974cfee41b3c73b51fcbbe11f5f24e04565c7aaa605c477c5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca486022d4bea379dc586cd1902f1fe3de57e8129adc24d5cc46adf7e7377a77",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-04-10T09:36:31Z",
    "title_canon_sha256": "9c28744978ca2834aeac5ae4620a41745b895bf3ecb6180d46263c9075fa8e60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.2887",
    "kind": "arxiv",
    "version": 5
  }
}