Pith Number

pith:6TU5QU7F

pith:2015:6TU5QU7FLPL5SVAA7BJ5FI3CXI

not attested not anchored not stored refs pending

The Learnability of Unknown Quantum Measurements

Hao-Chung Cheng, Min-Hsiu Hsieh, Ping-Cheng Yeh

arxiv:1501.00559 v1 · 2015-01-03 · quant-ph · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6TU5QU7FLPL5SVAA7BJ5FI3CXI}

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	2026-05-18T01:07:58.576072Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f4e9d853e55bd7d95400f853d2a362ba314c0ba7bdf37721f8aeb4282cc8cde4

Aliases

arxiv: 1501.00559 · arxiv_version: 1501.00559v1 · doi: 10.48550/arxiv.1501.00559 · pith_short_12: 6TU5QU7FLPL5 · pith_short_16: 6TU5QU7FLPL5SVAA · pith_short_8: 6TU5QU7F

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/6TU5QU7FLPL5SVAA7BJ5FI3CXI \
  | 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: f4e9d853e55bd7d95400f853d2a362ba314c0ba7bdf37721f8aeb4282cc8cde4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50a4bdcfb292ee7348f7cf5577a894413ca7676434ff690e0ed10733813fc8db",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-01-03T12:26:10Z",
    "title_canon_sha256": "b2b9526ff6e44b331fe46ff2b88725bc3d1428649dd154bc0b9c7f8234c3213f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.00559",
    "kind": "arxiv",
    "version": 1
  }
}