Pith Number

pith:PEMJUBQR

pith:2021:PEMJUBQRN22EJVISXFU77MEVWV

not attested not anchored not stored refs pending

Indefinite Causal Orders from Superpositions in Time

David Felce, Eduardo O. Dias, Nicetu Tibau Vidal, Vlatko Vedral

arxiv:2107.08076 v2 · 2021-07-16 · 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{PEMJUBQRN22EJVISXFU77MEVWV}

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

Partitions in quantum theory

Receipt and verification

First computed	2026-07-05T04:39:18.998229Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

79189a06116eb444d512b969ffb095b5545506fe4ebbfb902cdac22bdee74ae8

Aliases

arxiv: 2107.08076 · arxiv_version: 2107.08076v2 · doi: 10.48550/arxiv.2107.08076 · pith_short_12: PEMJUBQRN22E · pith_short_16: PEMJUBQRN22EJVIS · pith_short_8: PEMJUBQR

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/PEMJUBQRN22EJVISXFU77MEVWV \
  | 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: 79189a06116eb444d512b969ffb095b5545506fe4ebbfb902cdac22bdee74ae8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea6de115b17ac3a8aa081c3a25a7b17040e01b96cef8255ed8ded8d1f3e6c76e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-07-16T18:39:26Z",
    "title_canon_sha256": "a28262147b3a7002ce6a1aedbdb1fdb6659e7472505f9a2dad2338934b0a1e11"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.08076",
    "kind": "arxiv",
    "version": 2
  }
}