Pith Number

pith:WWJIIWEG

pith:2021:WWJIIWEGBAYH6RXATLCAAXG53C

not attested not anchored not stored refs pending

Single-component gradient rules for variational quantum algorithms

Frederik Wilde, Jens Eisert, Shozab Qasim, Thomas Hubregtsen

arxiv:2106.01388 v1 · 2021-06-02 · quant-ph · cs.LG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WWJIIWEGBAYH6RXATLCAAXG53C}

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	2026-07-05T04:23:04.378042Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b59284588608307f46e09ac4005cddd8b3fa9be4267506eb1f6566a5ef3a51c2

Aliases

arxiv: 2106.01388 · arxiv_version: 2106.01388v1 · doi: 10.48550/arxiv.2106.01388 · pith_short_12: WWJIIWEGBAYH · pith_short_16: WWJIIWEGBAYH6RXA · pith_short_8: WWJIIWEG

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/WWJIIWEGBAYH6RXATLCAAXG53C \
  | 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: b59284588608307f46e09ac4005cddd8b3fa9be4267506eb1f6566a5ef3a51c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "27b6f79174236f9a30e4f89d13110ddab2225e37125acfc08323b8fd3a1b9977",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-06-02T18:00:10Z",
    "title_canon_sha256": "d02a9eb6a51834f9f70cd7c29f0a2e56695004cacf7c10e321f5eb4eb2093919"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.01388",
    "kind": "arxiv",
    "version": 1
  }
}