Pith Number

pith:C7MUWQD3

pith:2019:C7MUWQD3YEEXMHMWQVKB3UCTKT

not attested not anchored not stored refs pending

Measure of not-completely-positive qubit maps: the general case

Francesco Petruccione, R. Srikanth, Vinayak Jagadish

arxiv:1907.10111 v1 · 2019-07-23 · 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{C7MUWQD3YEEXMHMWQVKB3UCTKT}

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	2026-05-17T23:39:39.022098Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17d94b407bc109761d9685541dd05354c44786197bd7cce010c5c56d115b837a

Aliases

arxiv: 1907.10111 · arxiv_version: 1907.10111v1 · doi: 10.48550/arxiv.1907.10111 · pith_short_12: C7MUWQD3YEEX · pith_short_16: C7MUWQD3YEEXMHMW · pith_short_8: C7MUWQD3

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/C7MUWQD3YEEXMHMWQVKB3UCTKT \
  | 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: 17d94b407bc109761d9685541dd05354c44786197bd7cce010c5c56d115b837a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85a654a6382e30ed672ccbc2866f7d0c6739c977323e780f651c6344ec23db80",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-07-23T19:48:31Z",
    "title_canon_sha256": "4471c21b4270efd3d4c5b01bd13716759c0af8006b9e73a59aa46126453efef6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.10111",
    "kind": "arxiv",
    "version": 1
  }
}