Pith Number

pith:K4UQ7G3U

pith:2000:K4UQ7G3UAQKBHOVWCHAQHTS7ZQ

not attested not anchored not stored refs pending

Hadamard Products of Product Operators and the Design of Gradient-Diffusion Experiments for Simulating Decoherence by NMR Spectroscopy

David G. Cory, Lorenza Viola, Timothy F. Havel, Yehuda Sharf

arxiv:quant-ph/0009010 v2 · 2000-09-04 · 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{K4UQ7G3UAQKBHOVWCHAQHTS7ZQ}

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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	2026-07-04T16:23:01.646992Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57290f9b74041413bab611c103ce5fcc3d5b74f1c87345c288cb70a41dfb88d6

Aliases

arxiv: quant-ph/0009010 · arxiv_version: quant-ph/0009010v2 · doi: 10.48550/arxiv.quant-ph/0009010 · pith_short_12: K4UQ7G3UAQKB · pith_short_16: K4UQ7G3UAQKBHOVW · pith_short_8: K4UQ7G3U

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/K4UQ7G3UAQKBHOVWCHAQHTS7ZQ \
  | 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: 57290f9b74041413bab611c103ce5fcc3d5b74f1c87345c288cb70a41dfb88d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e07403c01e76affe5a31e466adccc6d5d2a0dfb27faad5270b0226268ae99010",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2000-09-04T17:21:14Z",
    "title_canon_sha256": "c21b8a1ddc28285457b61aa923790c668a9e2e959659ebdba965aa8d0011474c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0009010",
    "kind": "arxiv",
    "version": 2
  }
}