Pith Number

pith:GT4P2NI2

pith:2005:GT4P2NI2D2TKZTGBTQ23G4LSDO

not attested not anchored not stored refs pending

Quantum Weakest Preconditions

Ellie D'Hondt, Prakash Panangaden

arxiv:quant-ph/0501157 v2 · 2005-01-26 · 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{GT4P2NI2D2TKZTGBTQ23G4LSDO}

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	2026-07-04T14:50:18.166836Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

34f8fd351a1ea6acccc19c35b371721bab8703170d6abfa04f9207d904554d7c

Aliases

arxiv: quant-ph/0501157 · arxiv_version: quant-ph/0501157v2 · doi: 10.48550/arxiv.quant-ph/0501157 · pith_short_12: GT4P2NI2D2TK · pith_short_16: GT4P2NI2D2TKZTGB · pith_short_8: GT4P2NI2

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/GT4P2NI2D2TKZTGBTQ23G4LSDO \
  | 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: 34f8fd351a1ea6acccc19c35b371721bab8703170d6abfa04f9207d904554d7c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b15b716df8da58b6a310749a69b659ba876a7c766a4ad4393ce7d1c124b08cf",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2005-01-26T16:51:53Z",
    "title_canon_sha256": "f5ad9ae33423ca02af343a78d5d0a06faea3b2f5c7799f38a7abb19a62846fda"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0501157",
    "kind": "arxiv",
    "version": 2
  }
}