Pith Number

pith:EQBKLYIV

pith:2019:EQBKLYIVJRJGSJSNFVEEE7Z6YT

not attested not anchored not stored refs pending

On the qubit routing problem

Alexander Cowtan, Alexandre Krajenbrink, Ross Duncan, Seyon Sivarajah, Silas Dilkes, Will Simmons

arxiv:1902.08091 v2 · 2019-02-21 · quant-ph · cs.DS · cs.PL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EQBKLYIVJRJGSJSNFVEEE7Z6YT}

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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.

Cited by

8 papers in Pith

Block Encoding of Sparse Matrices via Coherent Permutation

QAP-Router: Tackling Qubit Routing as Dynamic Quadratic Assignment with Reinforcement Learning

A Multi-Level Integrity Evaluation Framework for Quantum Circuits under Controlled Anomaly Injection

Congestion-free routing on quantum chips

Scaling Qubit Mapping and Routing With Position Graph Abstraction and Memoization

Receipt and verification

First computed	2026-05-17T23:42:23.508798Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2402a5e1154c5269264d2d48427f3ec4d11367f8e319b5c629b7f0ad040fae56

Aliases

arxiv: 1902.08091 · arxiv_version: 1902.08091v2 · doi: 10.48550/arxiv.1902.08091 · pith_short_12: EQBKLYIVJRJG · pith_short_16: EQBKLYIVJRJGSJSN · pith_short_8: EQBKLYIV

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/EQBKLYIVJRJGSJSNFVEEE7Z6YT \
  | 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: 2402a5e1154c5269264d2d48427f3ec4d11367f8e319b5c629b7f0ad040fae56

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "04d19011eebbf7f70f6218c15886b1c71f6e1b919c77390b986b973e5a53ea4d",
    "cross_cats_sorted": [
      "cs.DS",
      "cs.PL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-02-21T15:09:20Z",
    "title_canon_sha256": "e254b07e94079d24b80c0165f0b748a72119a85af4dd67d4d506db9884684530"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.08091",
    "kind": "arxiv",
    "version": 2
  }
}