Pith Number

pith:FRDHQ4RA

pith:2020:FRDHQ4RA3762OEDR3IKCBLGCH2

not attested not anchored not stored refs pending

Learning temporal data with variational quantum recurrent neural network

Keisuke Fujii, Kosuke Mitarai, Makoto Negoro, Masahiro Kitagawa, Yuto Takaki

arxiv:2012.11242 v1 · 2020-12-21 · 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{FRDHQ4RA3762OEDR3IKCBLGCH2}

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	2026-07-05T02:41:10.867091Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c46787220dffda71071da1420acc23eabd046aea371b7f30ffda70896bdc9c2

Aliases

arxiv: 2012.11242 · arxiv_version: 2012.11242v1 · doi: 10.48550/arxiv.2012.11242 · pith_short_12: FRDHQ4RA3762 · pith_short_16: FRDHQ4RA3762OEDR · pith_short_8: FRDHQ4RA

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/FRDHQ4RA3762OEDR3IKCBLGCH2 \
  | 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: 2c46787220dffda71071da1420acc23eabd046aea371b7f30ffda70896bdc9c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5b89d45848e6509419c22649590089d7d0d4cd27773b7d233c8ce7face05b87",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-12-21T10:47:28Z",
    "title_canon_sha256": "cd2c3dcfdcd5592e927698da8fca7e1d0dc89a77f80e9f5b644d27a63c0d1bb5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.11242",
    "kind": "arxiv",
    "version": 1
  }
}