Pith Number

pith:IIDQCN23

pith:2004:IIDQCN233TJZJ23YDOEBPFPY4L

not attested not anchored not stored refs pending

On superselection rules for macroscopic objects

Lev Prokhorov

arxiv:quant-ph/0406220 v5 · 2004-06-29 · 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{IIDQCN233TJZJ23YDOEBPFPY4L}

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	2026-07-04T14:50:16.875223Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

420701375bdcd394eb781b881795f8e2dd2d8ad4be49da1b6d1f9f59a995e58b

Aliases

arxiv: quant-ph/0406220 · arxiv_version: quant-ph/0406220v5 · doi: 10.48550/arxiv.quant-ph/0406220 · pith_short_12: IIDQCN233TJZ · pith_short_16: IIDQCN233TJZJ23Y · pith_short_8: IIDQCN23

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/IIDQCN233TJZJ23YDOEBPFPY4L \
  | 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: 420701375bdcd394eb781b881795f8e2dd2d8ad4be49da1b6d1f9f59a995e58b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f39aaa6aeba8275adf07869fcd0c8c72c20d9ee5f6edd68105bf2bee5cdb5ef",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2004-06-29T14:18:57Z",
    "title_canon_sha256": "46a13457fa7ffa2844b27944b52182d4c8b540e5646323d0935a876696a45f26"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0406220",
    "kind": "arxiv",
    "version": 5
  }
}