Pith Number

pith:T4FJVBEJ

pith:2009:T4FJVBEJAA6YJPM63QQMDYE7SH

not attested not anchored not stored refs pending

Quantum Darwinism

Wojciech Hubert Zurek

arxiv:0903.5082 v1 · 2009-03-29 · 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{T4FJVBEJAA6YJPM63QQMDYE7SH}

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

Wavefunction branches demand a definition!

Receipt and verification

First computed	2026-07-04T17:14:34.866860Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f0a9a8489003d84bd9edc20c1e09f91f43d76868c642cd5b666e0ad4d7773b3

Aliases

arxiv: 0903.5082 · arxiv_version: 0903.5082v1 · doi: 10.48550/arxiv.0903.5082 · pith_short_12: T4FJVBEJAA6Y · pith_short_16: T4FJVBEJAA6YJPM6 · pith_short_8: T4FJVBEJ

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/T4FJVBEJAA6YJPM63QQMDYE7SH \
  | 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: 9f0a9a8489003d84bd9edc20c1e09f91f43d76868c642cd5b666e0ad4d7773b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4af9326fd29da568b0fe68058554fa34c315a9808ec7326bcdc09aad3d63e517",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-03-29T19:08:30Z",
    "title_canon_sha256": "37ab50f9da7beac9303f5ecc230537b9c27ce08d402c60ba4b92bf7de417f66f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.5082",
    "kind": "arxiv",
    "version": 1
  }
}