Pith Number

pith:ZWGFRI6N

pith:2014:ZWGFRI6NN3XQNHZARHFMBGI5IR

not attested not anchored not stored refs pending

The Structure of Qubit Unextendible Product Bases

Nathaniel Johnston

arxiv:1401.7920 v2 · 2014-01-30 · 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{ZWGFRI6NN3XQNHZARHFMBGI5IR}

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	2026-05-18T02:40:47.295924Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd8c58a3cd6eef069f2089cac0991d4471c8b58685e01fce285a60b4b83e7c4e

Aliases

arxiv: 1401.7920 · arxiv_version: 1401.7920v2 · doi: 10.48550/arxiv.1401.7920 · pith_short_12: ZWGFRI6NN3XQ · pith_short_16: ZWGFRI6NN3XQNHZA · pith_short_8: ZWGFRI6N

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/ZWGFRI6NN3XQNHZARHFMBGI5IR \
  | 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: cd8c58a3cd6eef069f2089cac0991d4471c8b58685e01fce285a60b4b83e7c4e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bba7b2945da3807385efad9dce40dcb5570a2df54fbe121ab0c5748fca1491d5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-01-30T16:52:15Z",
    "title_canon_sha256": "5d0485628fa53b0d0d914228f421c597945769a15fc66fd8e6807629de5a2ca8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.7920",
    "kind": "arxiv",
    "version": 2
  }
}