Pith Number

pith:W37H5NXB

pith:2011:W37H5NXB7WR465KDS2AQHAM2TN

not attested not anchored not stored refs pending

Design and Stability of Discrete-Time Quantum Filters with Measurement Imperfections

Abhinav Somaraju, Clement Sayrin, Igor Dotsenko, Pierre Rouchon

arxiv:1109.5344 v2 · 2011-09-25 · math-ph · math.MP · 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{W37H5NXB7WR465KDS2AQHAM2TN}

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	2026-05-18T04:12:11.419685Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6fe7eb6e1fda3cf7543968103819a9b7e36ef2354e2f7d53b84eb501b215235

Aliases

arxiv: 1109.5344 · arxiv_version: 1109.5344v2 · doi: 10.48550/arxiv.1109.5344 · pith_short_12: W37H5NXB7WR4 · pith_short_16: W37H5NXB7WR465KD · pith_short_8: W37H5NXB

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/W37H5NXB7WR465KDS2AQHAM2TN \
  | 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: b6fe7eb6e1fda3cf7543968103819a9b7e36ef2354e2f7d53b84eb501b215235

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae13d286f07d0827138f4a226e046482d07a3d9924f97624d3f208ecd0b6229b",
    "cross_cats_sorted": [
      "math.MP",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2011-09-25T11:32:05Z",
    "title_canon_sha256": "71dcbc8b6034b68523a8d6a0a7f8de2ebc6af8439ec34010d479ffee567f07a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.5344",
    "kind": "arxiv",
    "version": 2
  }
}