Pith Number

pith:KYKIDJR3

pith:2020:KYKIDJR3ATSC6I52NZTBTS6X3W

not attested not anchored not stored refs pending

Five open problems in quantum information

Karol \.Zyczkowski, {\L}ukasz Rudnicki, Pawe{\l} Horodecki

arxiv:2002.03233 v2 · 2020-02-08 · 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{KYKIDJR3ATSC6I52NZTBTS6X3W}

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.

Cited by

2 papers in Pith

High-Dimensional Carrier-Assisted Entanglement Purification Based on Mutually Unbiased Bases

Receipt and verification

First computed	2026-07-05T02:00:43.682524Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

561481a63b04e42f23ba6e6619cbd7ddb7a473a215a11553d4eab330b10fc568

Aliases

arxiv: 2002.03233 · arxiv_version: 2002.03233v2 · doi: 10.48550/arxiv.2002.03233 · pith_short_12: KYKIDJR3ATSC · pith_short_16: KYKIDJR3ATSC6I52 · pith_short_8: KYKIDJR3

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/KYKIDJR3ATSC6I52NZTBTS6X3W \
  | 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: 561481a63b04e42f23ba6e6619cbd7ddb7a473a215a11553d4eab330b10fc568

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0dddc2c62e3cf3293445203a67e84b32eb94fb3377d0e6fdf425fe7260475eb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-02-08T21:36:13Z",
    "title_canon_sha256": "816e139a175c33fd1c88f882d862079be5129fadd4526970ca7e603becb3672f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.03233",
    "kind": "arxiv",
    "version": 2
  }
}