Pith Number

pith:5U77BAZ5

pith:2019:5U77BAZ5BSOVDVDJDVRJLF4AVY

not attested not anchored not stored refs pending

Robust quantum metrology with explicit symmetric states

Damian Markham, Nathan Shettell, Yingkai Ouyang

arxiv:1908.02378 v4 · 2019-08-06 · 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{5U77BAZ5BSOVDVDJDVRJLF4AVY}

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

Variational-State Quantum Metrology

Receipt and verification

First computed	2026-07-05T03:36:50.704475Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed3ff0833d0c9d51d4691d62959780ae0a899c36d8400c6f9b55a162839e74e1

Aliases

arxiv: 1908.02378 · arxiv_version: 1908.02378v4 · doi: 10.48550/arxiv.1908.02378 · pith_short_12: 5U77BAZ5BSOV · pith_short_16: 5U77BAZ5BSOVDVDJ · pith_short_8: 5U77BAZ5

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/5U77BAZ5BSOVDVDJDVRJLF4AVY \
  | 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: ed3ff0833d0c9d51d4691d62959780ae0a899c36d8400c6f9b55a162839e74e1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c2df86aec534ac580166d85356916b387c43d1adadcbd8f273fe7bfcdef11c9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-08-06T21:56:54Z",
    "title_canon_sha256": "9f2af922776474b1667df6c4db9bdebe549e3ed6a5dfb8d9c698ae2c554f61e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.02378",
    "kind": "arxiv",
    "version": 4
  }
}