Pith Number

pith:5CCKE5QU

pith:2013:5CCKE5QUYSEYLHR64UJZQIS2EC

not attested not anchored not stored refs pending

Driving at the quantum speed limit: Optimal control of a two-level system

Gerhard C. Hegerfeldt

arxiv:1305.6403 v2 · 2013-05-28 · 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{5CCKE5QUYSEYLHR64UJZQIS2EC}

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	2026-05-18T01:49:40.906249Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e884a27614c489859e3ee51398225a2097e74356b75760150a68c28572e2525c

Aliases

arxiv: 1305.6403 · arxiv_version: 1305.6403v2 · doi: 10.48550/arxiv.1305.6403 · pith_short_12: 5CCKE5QUYSEY · pith_short_16: 5CCKE5QUYSEYLHR6 · pith_short_8: 5CCKE5QU

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/5CCKE5QUYSEYLHR64UJZQIS2EC \
  | 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: e884a27614c489859e3ee51398225a2097e74356b75760150a68c28572e2525c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c17747fbc4ecb42acdadd1c6ed61d4739762570ff994b56a9e1bc7cd7a94d06d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-05-28T08:24:11Z",
    "title_canon_sha256": "b800a13580b1ea484124fdc3c5af6cdc7f8cb9e1bc7ccb149f0ac6bcc54fb1ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.6403",
    "kind": "arxiv",
    "version": 2
  }
}