Pith Number

pith:BLN7EK2B

pith:2009:BLN7EK2BBDGFAL5375W74BDEOZ

not attested not anchored not stored refs pending

Two-sided bounds on minimum-error quantum measurement, on the reversibility of quantum dynamics, and on the maximum overlap problem using directional iterates

Jon Tyson

arxiv:0907.3386 v4 · 2009-07-20 · quant-ph · math-ph · math.MP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BLN7EK2BBDGFAL5375W74BDEOZ}

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	2026-05-18T04:40:10.529673Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0adbf22b4108cc502fbbff6dfe0464767b0c776f2abca81f0d10ad6066d6bad7

Aliases

arxiv: 0907.3386 · arxiv_version: 0907.3386v4 · doi: 10.48550/arxiv.0907.3386 · pith_short_12: BLN7EK2BBDGF · pith_short_16: BLN7EK2BBDGFAL53 · pith_short_8: BLN7EK2B

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/BLN7EK2BBDGFAL5375W74BDEOZ \
  | 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: 0adbf22b4108cc502fbbff6dfe0464767b0c776f2abca81f0d10ad6066d6bad7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b488f4c87246076280a229d595c8491c421b4b83eca6ce18b2c13655f8a362a5",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-07-20T19:43:59Z",
    "title_canon_sha256": "f92655df3163d0939aba41bc56b98f2b065a1a07bf317f969489f27c867c71ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.3386",
    "kind": "arxiv",
    "version": 4
  }
}