pith. sign in
Pith Number

pith:XN4I44Y6

pith:2011:XN4I44Y675HGCY3JQS5CUUPUKR
not attested not anchored not stored refs pending

"Time operator": the challenge persists

Bogdan Mielnik, Gabino Torres-Vega

arxiv:1112.4198 v1 · 2011-12-18 · quant-ph

Add to your LaTeX paper
\usepackage{pith}
\pithnumber{XN4I44Y675HGCY3JQS5CUUPUKR}

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.

Cited by

1 paper in Pith

Receipt and verification
First computed 2026-05-18T04:06:06.860251Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

bb788e731eff4e61636984ba2a51f454541eca79d32684cbd8bfc14d0c992903

Aliases

arxiv: 1112.4198 · arxiv_version: 1112.4198v1 · doi: 10.48550/arxiv.1112.4198 · pith_short_12: XN4I44Y675HG · pith_short_16: XN4I44Y675HGCY3J · pith_short_8: XN4I44Y6
Agent API
Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/XN4I44Y675HGCY3JQS5CUUPUKR \
  | 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: bb788e731eff4e61636984ba2a51f454541eca79d32684cbd8bfc14d0c992903
Canonical record JSON
{
  "metadata": {
    "abstract_canon_sha256": "99aebe7d315ca7ee404bd6af240c04e1e94189c2abdc821df235d95a044067bf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-12-18T22:50:46Z",
    "title_canon_sha256": "63f89c45d8c1282d79a051113b7e4b0b5c5c2746a7f79752b88b5af9a0defb93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.4198",
    "kind": "arxiv",
    "version": 1
  }
}