Pith Number

pith:GPD4MKRG

pith:2014:GPD4MKRGU3IHBJVOS2CA5KOQBC

not attested not anchored not stored refs pending

Lower Bound of Concurrence Based on Generalized Positive Maps

Hui-hui Qin, Shao-Ming Fei

arxiv:1401.1624 v1 · 2014-01-08 · 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{GPD4MKRGU3IHBJVOS2CA5KOQBC}

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	2026-05-18T03:02:58.323501Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

33c7c62a26a6d070a6ae96840ea9d008b71d5564624af7766e4e392e582592ce

Aliases

arxiv: 1401.1624 · arxiv_version: 1401.1624v1 · doi: 10.48550/arxiv.1401.1624 · pith_short_12: GPD4MKRGU3IH · pith_short_16: GPD4MKRGU3IHBJVO · pith_short_8: GPD4MKRG

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/GPD4MKRGU3IHBJVOS2CA5KOQBC \
  | 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: 33c7c62a26a6d070a6ae96840ea9d008b71d5564624af7766e4e392e582592ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "960adf3322cb81414165bbe6d96b2112fc773c5402137d0c9d4c1dd6f76a94d3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-01-08T09:14:06Z",
    "title_canon_sha256": "255563dd15e51644460ee7fe0c11d52f9bf806f23e2f3df7869fed29d9a10dbc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.1624",
    "kind": "arxiv",
    "version": 1
  }
}