Pith Number

pith:7FVJJCBB

pith:2019:7FVJJCBBIRX4LAACHUAFKJFEP3

not attested not anchored not stored refs pending

Quantum algorithm for spectral projection by measuring an ancilla iteratively

Tzu-Chieh Wei, Yanzhu Chen

arxiv:1903.11999 v3 · 2019-03-28 · 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{7FVJJCBBIRX4LAACHUAFKJFEP3}

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	2026-07-05T00:49:35.790855Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f96a948821446fc580023d005524a47ee77eec5a78bbc076ec31bcb701d91036

Aliases

arxiv: 1903.11999 · arxiv_version: 1903.11999v3 · doi: 10.48550/arxiv.1903.11999 · pith_short_12: 7FVJJCBBIRX4 · pith_short_16: 7FVJJCBBIRX4LAAC · pith_short_8: 7FVJJCBB

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/7FVJJCBBIRX4LAACHUAFKJFEP3 \
  | 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: f96a948821446fc580023d005524a47ee77eec5a78bbc076ec31bcb701d91036

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a613aedce50d989656cc455cca3c6d0181a6da3cd1ac1fb0ba0634d36bdc8c1d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-03-28T14:20:37Z",
    "title_canon_sha256": "285e8b930bd0961f45ebe44a8fd317c46ee965dd0166061be99e0d8f15113f3b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.11999",
    "kind": "arxiv",
    "version": 3
  }
}