Pith Number

pith:5O6IWLZP

pith:2008:5O6IWLZPTBI2BEFXGJE327YYE3

not attested not anchored not stored refs pending

Quantum Tomographic Reconstruction with Error Bars: a Kalman Filter Approach

Koenraad M.R. Audenaert, S. Scheel

arxiv:0809.3359 v2 · 2008-09-19 · 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{5O6IWLZPTBI2BEFXGJE327YYE3}

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	2026-05-18T04:22:11.632374Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ebbc8b2f2f9851a090b73249bd7f1826d824e33c45f4bd2b5fdd6076053101b3

Aliases

arxiv: 0809.3359 · arxiv_version: 0809.3359v2 · doi: 10.48550/arxiv.0809.3359 · pith_short_12: 5O6IWLZPTBI2 · pith_short_16: 5O6IWLZPTBI2BEFX · pith_short_8: 5O6IWLZP

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/5O6IWLZPTBI2BEFXGJE327YYE3 \
  | 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: ebbc8b2f2f9851a090b73249bd7f1826d824e33c45f4bd2b5fdd6076053101b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d4c9f546a64cd96dc40cdba7086c957fe76d09d0547af70b3d81781c5a0881a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2008-09-19T12:16:44Z",
    "title_canon_sha256": "b2e9f83b6d2e0b35630242b796bfd68f80b9a175e464be1c92bf71b5f8f9264a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.3359",
    "kind": "arxiv",
    "version": 2
  }
}