Pith Number

pith:HH6QMFX6

pith:2015:HH6QMFX6DDDBCEALBWPYHSC6TY

not attested not anchored not stored refs pending

Coherently tracking the covariance matrix of an open quantum system

Matthew James, Michael R. Hush, Zibo Miao

arxiv:1502.03590 v2 · 2015-02-12 · 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{HH6QMFX6DDDBCEALBWPYHSC6TY}

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	2026-05-18T01:36:13.542258Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39fd0616fe18c611100b0d9f83c85e9e377e7a1b523ab07f2ee7e623ec7398e5

Aliases

arxiv: 1502.03590 · arxiv_version: 1502.03590v2 · doi: 10.48550/arxiv.1502.03590 · pith_short_12: HH6QMFX6DDDB · pith_short_16: HH6QMFX6DDDBCEAL · pith_short_8: HH6QMFX6

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/HH6QMFX6DDDBCEALBWPYHSC6TY \
  | 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: 39fd0616fe18c611100b0d9f83c85e9e377e7a1b523ab07f2ee7e623ec7398e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "57ed124070fe4de676289d5012ef4d74cd749b370690d70d06f3387ec6ae8843",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-02-12T10:17:30Z",
    "title_canon_sha256": "eaf507839e953b18dad9e53f9b24939cc6f49dbc6e74bb6570223b67f7ba20a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.03590",
    "kind": "arxiv",
    "version": 2
  }
}