Pith Number

pith:TGUPQPRV

pith:2018:TGUPQPRVABJGJLX75EWRSYTTWU

not attested not anchored not stored refs pending

Quantum limit to subdiffraction incoherent optical imaging

Mankei Tsang

arxiv:1806.02781 v4 · 2018-06-07 · 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{TGUPQPRVABJGJLX75EWRSYTTWU}

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	2026-05-17T23:56:47.841007Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

99a8f83e35005264aeffe92d196273b53b77234de562976ead26dd79440b9cd6

Aliases

arxiv: 1806.02781 · arxiv_version: 1806.02781v4 · doi: 10.48550/arxiv.1806.02781 · pith_short_12: TGUPQPRVABJG · pith_short_16: TGUPQPRVABJGJLX7 · pith_short_8: TGUPQPRV

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/TGUPQPRVABJGJLX75EWRSYTTWU \
  | 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: 99a8f83e35005264aeffe92d196273b53b77234de562976ead26dd79440b9cd6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6bd886e2288c57c437a15de34af79310eca583f1b5dcd826e847711a1dafcedd",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-06-07T16:52:08Z",
    "title_canon_sha256": "370dc68eed90788bd55ec34ec8586a6d0dc9f329fbcac76a150211027390257b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.02781",
    "kind": "arxiv",
    "version": 4
  }
}