Pith Number

pith:RB73XPAJ

pith:2005:RB73XPAJ6GS7L5ABFHWDBR64UP

not attested not anchored not stored refs pending

Deriving Spin within a discrete-time theory

Erasmo Recami, Giovanni Salesi

arxiv:quant-ph/0512113 v2 · 2005-12-14 · 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{RB73XPAJ6GS7L5ABFHWDBR64UP}

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	2026-05-18T01:37:57.277334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

887fbbbc09f1a5f5f40129ec30c7dca3c6d2d92c8bdfd0cd49c68cd9e07c435e

Aliases

arxiv: quant-ph/0512113 · arxiv_version: quant-ph/0512113v2 · doi: 10.48550/arxiv.quant-ph/0512113 · pith_short_12: RB73XPAJ6GS7 · pith_short_16: RB73XPAJ6GS7L5AB · pith_short_8: RB73XPAJ

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/RB73XPAJ6GS7L5ABFHWDBR64UP \
  | 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: 887fbbbc09f1a5f5f40129ec30c7dca3c6d2d92c8bdfd0cd49c68cd9e07c435e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e28580f4bceda90d515ac1a4394ee19624a5d1a62b9aa6ff8d9397030e9f539",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2005-12-14T20:31:02Z",
    "title_canon_sha256": "8857e3aea3784464a5c7392dfb2f8e78fcd4be87285223f5ef1249c7e9aaa332"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0512113",
    "kind": "arxiv",
    "version": 2
  }
}