Pith Number

pith:S44OSIXL

pith:2018:S44OSIXLZQ6Y5DU2SVDVTDLPMR

not attested not anchored not stored refs pending

Quantum Arnoldi and conjugate gradient iteration algorithm

Changpeng Shao

arxiv:1807.07820 v2 · 2018-07-20 · 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{S44OSIXLZQ6Y5DU2SVDVTDLPMR}

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	2026-05-18T00:08:14.397366Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9738e922ebcc3d8e8e9a9547598d6f6456f9213c43e8e5b36c1eff2bda476734

Aliases

arxiv: 1807.07820 · arxiv_version: 1807.07820v2 · doi: 10.48550/arxiv.1807.07820 · pith_short_12: S44OSIXLZQ6Y · pith_short_16: S44OSIXLZQ6Y5DU2 · pith_short_8: S44OSIXL

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/S44OSIXLZQ6Y5DU2SVDVTDLPMR \
  | 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: 9738e922ebcc3d8e8e9a9547598d6f6456f9213c43e8e5b36c1eff2bda476734

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0ae5e8d88ded5e36b8c6706a6605ca9b6aeaa7e8ebbaf9e0a8f68c4fb1a6c8a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-07-20T12:59:03Z",
    "title_canon_sha256": "d839811c00b2f60dc8ac8769588c101b044b50d5bb80be56dcd966f80618a479"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.07820",
    "kind": "arxiv",
    "version": 2
  }
}