Pith Number

pith:DD6BSFA4

pith:1996:DD6BSFA4AIQZTHSUMKCXULGKQS

not attested not anchored not stored refs pending

The structure of the quantum mechanical state space and induced superselection rules

Joachim Kupsch

arxiv:quant-ph/9612033 v1 · 1996-12-11 · 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{DD6BSFA4AIQZTHSUMKCXULGKQS}

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	2026-05-18T01:37:53.295259Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18fc19141c0221999e5462857a2cca84b3e8f22b379230156cfaa45d20b15d1d

Aliases

arxiv: quant-ph/9612033 · arxiv_version: quant-ph/9612033v1 · doi: 10.48550/arxiv.quant-ph/9612033 · pith_short_12: DD6BSFA4AIQZ · pith_short_16: DD6BSFA4AIQZTHSU · pith_short_8: DD6BSFA4

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/DD6BSFA4AIQZTHSUMKCXULGKQS \
  | 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: 18fc19141c0221999e5462857a2cca84b3e8f22b379230156cfaa45d20b15d1d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20415bb3313dfc3b8cd61cb8a8055d33c61a539649327d8014fbf3a267c46a7e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "1996-12-11T14:19:04Z",
    "title_canon_sha256": "3d4d8c20a3ee05eb34482ec5e7c72cbd03465ec3c5604905b23aac0d2d0637b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/9612033",
    "kind": "arxiv",
    "version": 1
  }
}