Pith Number

pith:BFNFHPNS

pith:2009:BFNFHPNSHTZXPLRABAICVCEYUM

not attested not anchored not stored refs pending

Effective Quantum Time Travel

George Svetlichny

arxiv:0902.4898 v1 · 2009-02-27 · 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{BFNFHPNSHTZXPLRABAICVCEYUM}

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

2 papers in Pith

Retrocausal capacity of a quantum channel

Qhronology: A Python package for studying quantum models of closed timelike curves

Receipt and verification

First computed	2026-05-18T04:01:00.272985Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

095a53bdb23cf377ae2008102a8898a308df0bb68dac6d9a398753db2f9abecc

Aliases

arxiv: 0902.4898 · arxiv_version: 0902.4898v1 · doi: 10.48550/arxiv.0902.4898 · pith_short_12: BFNFHPNSHTZX · pith_short_16: BFNFHPNSHTZXPLRA · pith_short_8: BFNFHPNS

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/BFNFHPNSHTZXPLRABAICVCEYUM \
  | 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: 095a53bdb23cf377ae2008102a8898a308df0bb68dac6d9a398753db2f9abecc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1eee4a4224d4a8947567e8fcdc58b4fd12d52299ad83c53afd97ff660d99d0c6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-02-27T19:19:20Z",
    "title_canon_sha256": "4ce7cbdf090d36882bd8312b671f21afa7caa14538ba2ab02905af7699450f4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.4898",
    "kind": "arxiv",
    "version": 1
  }
}