Pith Number

pith:DGO75GS2

pith:2011:DGO75GS2XPY3VQKBVTCMDWNEE7

not attested not anchored not stored refs pending

Proper and improper density matrices and the consistency of the Deutsch model for Local Closed Timelike Curves

A. C. Lobo, I. L. Paiva, P. R. Dieguez

arxiv:1110.6361 v3 · 2011-10-28 · 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{DGO75GS2XPY3VQKBVTCMDWNEE7}

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	2026-05-18T04:00:15.555259Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

199dfe9a5abbf1bac141acc4c1d9a427c9192c420504fe1ece1541254c9b134c

Aliases

arxiv: 1110.6361 · arxiv_version: 1110.6361v3 · doi: 10.48550/arxiv.1110.6361 · pith_short_12: DGO75GS2XPY3 · pith_short_16: DGO75GS2XPY3VQKB · pith_short_8: DGO75GS2

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/DGO75GS2XPY3VQKBVTCMDWNEE7 \
  | 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: 199dfe9a5abbf1bac141acc4c1d9a427c9192c420504fe1ece1541254c9b134c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8108db441558617fa099d65ff1b42bd8772735d919efeff3fb3a3a853a31ec4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-10-28T15:08:41Z",
    "title_canon_sha256": "c2fad305b89fd53bc373a68c747683cbafabfa79775a4f9e29b2c1f5f358dbab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.6361",
    "kind": "arxiv",
    "version": 3
  }
}